IRIX Return-Path: <[email protected]>
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From: Mike Kienenberger <[email protected]>
To: [email protected]Subject: BoS: a bug in IRIX open() as well [was Re: Possible SERIOUS bug in open()?]
Status:
X-PMFLAGS: 34078848 0
As long as we're on the topic of broken open() calls, here's one
I discovered last february in IRIX 6.2.
Basically, if you have SGI NFS clients mounting filesystems from
SGI NFS servers with "root-as-nobody" access (access= entry, but
no root= entry), you can open() any regular file from the NFS
client. You can't read it, but you can open it. Once you've
opened it, this tends to corrupt the kernel file tables. Often
this results in the following possibilities:
- Root on the client can now read the file.
- No one else can access the file.
This continues until the machine is rebooted, thus it's most likely
only a problem in the SGI NFS client side of the software.
SGI did finally create Bug #465954, but I've been told that it's
unlikely that it'll be fixed anytime soon.
SGI's only response has been the following:
"The only workaround at this time for Bug #465954 is to specify
the root= option in /etc/exports. One of our lead engineer has
stated in the bug report that this does not cause a security problem,
so it should be safe for you to implement."
The only useful workaround I've been able to determine is to make
sure that any non-"root-as-nobody"-readable files are located in
directories that are also not accessible by "root-as-nobody" so
that this condition never pops up.
--
Mike Kienenberger Arctic Region Supercomputing Center
Systems Analyst (907) 474-6842
[email protected]http://www.arsc.edu
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Subject: BoS: IRIX /var/inst/patchbase
Status:
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I checked to see if this had been brought up before on Bugtraq, if it
has been, I apologize. Didn't see it in the archive.
Has anyone ever noticed that the IRIX inst patch installs hide away
a copy of the patched binary in /var/inst/patchbase?
While fine I guess for some things where a rollback might be needed, I
also noticed that the various setuid buffer overrun binaries that we
patched are saved away with the setuid bits retained.
For example (as root):
cd /var/inst/patchbase/usr/bsd
ls -al ordist
-rwsr-xr-x 1 root sys 79208 Sep 1 15:42 ordist*
Now, while so far I haven't found /var/inst/patchbase directory
permissions set to anything but root owner, mode 700, I wonder if that
is just thanks to the umask when the inst program is first run? Does
anyone have a world/group readable /var/inst/patchbase? Because if
you do, you could still have a problem.
We are now considering adding this step to adding a patch that is for
setuid buffer overflow style problems in IRIX.
versions removehist patchSGxxxxxxx
That cleans up the stored patchbase items according to the README's.
I don't know if that creates any other problems in installing future
patches. Of course you could always remove the setuid bit as well.
I'd be curious if other vendors store away patched binaries setuid
like that. Doesn't seem like a real good idea.
--------------------------------------------------------------------
Paul Tatarsky [email protected]
UC Santa Cruz
CE/CIS Systems Manager
--------------------------------------------------------------------
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From: SGI Security Coordinator <[email protected]>
Subject: Silicon Graphics Security Advisory 19971103-01-PX - IRIX syserr
and permissions programs
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To: [email protected]
Status:
X-PMFLAGS: 34078848 0
DISTRIBUTION RESTRICTIONS - NONE - FOR PUBLIC RELEASE
-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
Silicon Graphics Inc. Security Advisory
Title: IRIX syserr and permissions programs
Number: 19971103-01-PX
Date: November 18, 1997
______________________________________________________________________________
Silicon Graphics provides this information freely to the SGI user community
for its consideration, interpretation, implementation and use. Silicon
Graphics recommends that this information be acted upon as soon as possible.
Silicon Graphics provides the information in this Security Advisory on
an "AS-IS" basis only, and disclaims all warranties with respect thereto,
express, implied or otherwise, including, without limitation, any warranty
of merchantability or fitness for a particular purpose. In no event shall
Silicon Graphics be liable for any loss of profits, loss of business, loss
of data or for any indirect, special, exemplary, incidental or consequential
damages of any kind arising from your use of, failure to use or improper
use of any of the instructions or information in this Security Advisory.
______________________________________________________________________________
- -----------------------
- --- Issue Specifics ---
- -----------------------
This advisory covers two security issues that were public reported as
two different issues. Both these issues have been addressed together
as one issue by Silicon Graphics.
The first vulnerability involves the syserr program. The System Error
Notification Broker (syserr) program is part of the Desktop System
Monitor which monitors the system for user defined events and then
provides notification and/or action when those events occur.
As part of normal operation, the syserr program manipulates certain
history and configuration files. A security issue was found in
these file operations.
The second issue involves the permissions tool found in the Indigo
Magic Desktop environment. The permissions tool allows users to modify
the Owner, Group and Others permission bits for files and directories.
A security issue was found in the operation of the permissions tool.
Silicon Graphics Inc. has investigated these issues and recommends the
following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED
that these measures be implemented on ALL SGI systems. These issues will
be corrected in future releases of IRIX.
- --------------
- --- Impact ---
- --------------
The IndigoMagic Desktop and Desktop System Monitor subsystems, which
contain the permissions and syserr programs respectively, are
installed by default on all desktop systems. These subsystems may
also be installed on other non-desktop systems.
Both of these issues require a local account for these vulnerabilities
to be exploited. With a local account, these vulnerabilities can
be exploited both locally and remotely.
Utilizing the syserr vulnerability, random files can be created
and corrupted.
With the permissions vulnerability, access can be gained as a
privileged user.
Both of these security issues have been publically disclosed and
discussed in several public forums.
- --------------------------
- --- Temporary Solution ---
- --------------------------
Although patches are available for this issue, it is realized that
there may be situations where installing the patches immediately may
not be possible.
The steps below can be used to remove the vulnerability by removing
the permissions of the syserr and permissions programs.
1) Become the root user on the system.
% /bin/su -
Password:
#
2) Change the permissions on the programs.
# /bin/chmod 500 /usr/sbin/syserr
# /bin/chmod 500 /usr/lib/desktop/permissions
************
*** NOTE ***
************
Removing the permissions from these programs
will prevent non-root users and programs from
using these programs.
3) Return to previous level.
# exit
$
- ----------------
- --- Solution ---
- ----------------
OS Version Vulnerable? Patch # Other Actions
---------- ----------- ------- -------------
IRIX 3.x no
IRIX 4.x no
IRIX 5.0.x yes not avail Note 1
IRIX 5.1.x yes not avail Note 1
IRIX 5.2 yes not avail Note 1
IRIX 5.3 yes 2238 & 2273
IRIX 6.0.x yes not avail Note 1
IRIX 6.1 yes not avail Note 1
IRIX 6.2 yes 2239
IRIX 6.3 yes 2240
IRIX 6.4 yes 2241
NOTES
1) upgrade operating system or see "Temporary Solution" section.
Patches are available via anonymous FTP and your service/support provider.
The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its
mirror, ftp.sgi.com. Security information and patches can be found
in the ~ftp/security and ~ftp/patches directories, respectfully.
##### Patch File Checksums ####
The actual patch will be a tar file containing the following files:
Filename: README.patch.2238
Algorithm #1 (sum -r): 33138 8 README.patch.2238
Algorithm #2 (sum): 54609 8 README.patch.2238
MD5 checksum: 06FEA4B87EFAAC414D93C02286BDC43F
Filename: patchSG0002238
Algorithm #1 (sum -r): 42580 4 patchSG0002238
Algorithm #2 (sum): 17470 4 patchSG0002238
MD5 checksum: 2B3CB2B7A1A34A060471F5EAFEC3C8D2
Filename: patchSG0002238.idb
Algorithm #1 (sum -r): 28213 14 patchSG0002238.idb
Algorithm #2 (sum): 165 14 patchSG0002238.idb
MD5 checksum: 64C63FE7812F66F70AA9F768108CC83E
Filename: patchSG0002238.insight_sw
Algorithm #1 (sum -r): 14141 6000 patchSG0002238.insight_sw
Algorithm #2 (sum): 32280 6000 patchSG0002238.insight_sw
MD5 checksum: 9CD26F3BD01FDB3B897713E4D1CB0903
Filename: patchSG0002238.sysmon_books
Algorithm #1 (sum -r): 24973 432 patchSG0002238.sysmon_books
Algorithm #2 (sum): 12014 432 patchSG0002238.sysmon_books
MD5 checksum: FBD60185ECA52E1004A2149C076387D3
Filename: patchSG0002238.sysmon_sw
Algorithm #1 (sum -r): 26734 104 patchSG0002238.sysmon_sw
Algorithm #2 (sum): 54767 104 patchSG0002238.sysmon_sw
MD5 checksum: A8B3E9CC35940ECE8A3B12EB19F60F1C
Filename: README.patch.2239
Algorithm #1 (sum -r): 64560 8 README.patch.2239
Algorithm #2 (sum): 52155 8 README.patch.2239
MD5 checksum: 55BBC5958A1FF9BC54043EB0CA11DEE2
Filename: patchSG0002239
Algorithm #1 (sum -r): 62613 5 patchSG0002239
Algorithm #2 (sum): 43481 5 patchSG0002239
MD5 checksum: 3FAEE6B9D75F5B83A841F7F062EF7B76
Filename: patchSG0002239.desktop_eoe_sw
Algorithm #1 (sum -r): 08003 107 patchSG0002239.desktop_eoe_sw
Algorithm #2 (sum): 62904 107 patchSG0002239.desktop_eoe_sw
MD5 checksum: 7D82A6EC707766C9656D70C278977875
Filename: patchSG0002239.idb
Algorithm #1 (sum -r): 07661 12 patchSG0002239.idb
Algorithm #2 (sum): 38563 12 patchSG0002239.idb
MD5 checksum: E8E34B1179B0F1E293207C7122BCD9E9
Filename: patchSG0002239.sysadmdesktop_sw
Algorithm #1 (sum -r): 65280 2881 patchSG0002239.sysadmdesktop_sw
Algorithm #2 (sum): 46052 2881 patchSG0002239.sysadmdesktop_sw
MD5 checksum: 902DD8070EE355A0670F1E82046C1C2B
Filename: patchSG0002239.sysmon_sw
Algorithm #1 (sum -r): 45274 95 patchSG0002239.sysmon_sw
Algorithm #2 (sum): 46934 95 patchSG0002239.sysmon_sw
MD5 checksum: 5DC4DD1021C72E58B96DBB6407D98729
Filename: README.patch.2240
Algorithm #1 (sum -r): 24466 7 README.patch.2240
Algorithm #2 (sum): 19111 7 README.patch.2240
MD5 checksum: 3BC19EB3BDA842471A47070AD1FF61CD
Filename: patchSG0002240
Algorithm #1 (sum -r): 48056 1 patchSG0002240
Algorithm #2 (sum): 31171 1 patchSG0002240
MD5 checksum: D0C0BD5AC20A36D88E8BC6241429F078
Filename: patchSG0002240.idb
Algorithm #1 (sum -r): 50798 1 patchSG0002240.idb
Algorithm #2 (sum): 39448 1 patchSG0002240.idb
MD5 checksum: 351BF9721D0FB68900672DBE1B4471D8
Filename: patchSG0002240.sysmon_sw
Algorithm #1 (sum -r): 31291 79 patchSG0002240.sysmon_sw
Algorithm #2 (sum): 13465 79 patchSG0002240.sysmon_sw
MD5 checksum: 60BEFBD357F36F386260B3C9E7692B4F
Filename: README.patch.2241
Algorithm #1 (sum -r): 49732 7 README.patch.2241
Algorithm #2 (sum): 19173 7 README.patch.2241
MD5 checksum: FF3183312FB43F3BFC0BF286BCC319B2
Filename: patchSG0002241
Algorithm #1 (sum -r): 44510 1 patchSG0002241
Algorithm #2 (sum): 32569 1 patchSG0002241
MD5 checksum: F187DE8830FFAB8BF2850DF0605606B7
Filename: patchSG0002241.idb
Algorithm #1 (sum -r): 63962 1 patchSG0002241.idb
Algorithm #2 (sum): 39424 1 patchSG0002241.idb
MD5 checksum: 33A0B768CF9FF2C5730F23FD1CDD1339
Filename: patchSG0002241.sysmon_sw
Algorithm #1 (sum -r): 62550 84 patchSG0002241.sysmon_sw
Algorithm #2 (sum): 16142 84 patchSG0002241.sysmon_sw
MD5 checksum: C67EBFE66258F0D5A0641EC5C7A3B43C
Filename: README.patch.2273
Algorithm #1 (sum -r): 09906 10 README.patch.2273
Algorithm #2 (sum): 48872 10 README.patch.2273
MD5 checksum: EB63F8B61B7C20144DC73F664FFC6532
Filename: patchSG0002273
Algorithm #1 (sum -r): 52671 3 patchSG0002273
Algorithm #2 (sum): 38361 3 patchSG0002273
MD5 checksum: 07B7E6E002B7C0D578B3919629FF5AF9
Filename: patchSG0002273.desktop_eoe_sw
Algorithm #1 (sum -r): 25464 108 patchSG0002273.desktop_eoe_sw
Algorithm #2 (sum): 64994 108 patchSG0002273.desktop_eoe_sw
MD5 checksum: 9C3453CA8D32FF16CFF4FB0B13FC983F
Filename: patchSG0002273.idb
Algorithm #1 (sum -r): 33091 12 patchSG0002273.idb
Algorithm #2 (sum): 50364 12 patchSG0002273.idb
MD5 checksum: 62C67DB1B5070D4457B6462BD30349C5
Filename: patchSG0002273.sysadmdesktop_sw
Algorithm #1 (sum -r): 02318 2872 patchSG0002273.sysadmdesktop_sw
Algorithm #2 (sum): 22358 2872 patchSG0002273.sysadmdesktop_sw
MD5 checksum: B08A2078F4F37FF8165542158717E8A5
- ------------------------
- --- Acknowledgments ---
- ------------------------
Silicon Graphics wishes to thank AUSCERT and CERT Coordination Center
organizations for their assistance in this matter.
- -----------------------------------------------------------
- --- Silicon Graphics Inc. Security Information/Contacts ---
- -----------------------------------------------------------
If there are questions about this document, email can be sent to
[email protected].
------oOo------
Silicon Graphics provides security information and patches for
use by the entire SGI community. This information is freely
available to any person needing the information and is available
via anonymous FTP and the Web.
The primary SGI anonymous FTP site for security information and patches
is sgigate.sgi.com (204.94.209.1). Security information and patches
are located under the directories ~ftp/security and ~ftp/patches,
respectively. The Silicon Graphics Security Headquarters Web page is
accessible at the URL http://www.sgi.com/Support/security/security.html.
For issues with the patches on the FTP sites, email can be sent to
[email protected].
For assistance obtaining or working with security patches, please
contact your SGI support provider.
------oOo------
Silicon Graphics provides a free security mailing list service
called wiretap and encourages interested parties to self-subscribe
to receive (via email) all SGI Security Advisories when they are
released. Subscribing to the mailing list can be done via the Web
(http://www.sgi.com/Support/security/wiretap.html) or by sending email
to SGI as outlined below.
% mail [email protected]
subscribe wiretap <YourEmailAddress>
end
^d
In the example above, <YourEmailAddress> is the email address that you
wish the mailing list information sent to. The word end must be on a
separate line to indicate the end of the body of the message. The
control-d (^d) is used to indicate to the mail program that you are
finished composing the mail message.
------oOo------
Silicon Graphics provides a comprehensive customer World Wide Web site.
This site is located at http://www.sgi.com/Support/security/security.html.
------oOo------
For reporting *NEW* SGI security issues, email can be sent to
[email protected] or contact your SGI support provider. A
support contract is not required for submitting a security report.
______________________________________________________________________________
This information is provided freely to all interested parties and may
be redistributed provided that it is not altered in any way, Silicon
Graphics is appropriately credited and the document retains and
includes its valid PGP signature.
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From: SGI Security Coordinator <[email protected]>
Subject: Silicon Graphics Security Advisory 19971102-01-PX - Vulnerability
in at(1) program
X-To: [email protected]
To: [email protected]
Status:
X-PMFLAGS: 34078848 0
DISTRIBUTION RESTRICTIONS - NONE - FOR PUBLIC RELEASE
-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
Silicon Graphics Inc. Security Advisory
Title: Vulnerability in at(1) program
Title: CERT CA-97.18
Number: 19971102-01-PX
Date: November 18, 1997
______________________________________________________________________________
Silicon Graphics provides this information freely to the SGI user community
for its consideration, interpretation, implementation and use. Silicon
Graphics recommends that this information be acted upon as soon as possible.
Silicon Graphics provides the information in this Security Advisory on
an "AS-IS" basis only, and disclaims all warranties with respect thereto,
express, implied or otherwise, including, without limitation, any warranty
of merchantability or fitness for a particular purpose. In no event shall
Silicon Graphics be liable for any loss of profits, loss of business, loss
of data or for any indirect, special, exemplary, incidental or consequential
damages of any kind arising from your use of, failure to use or improper
use of any of the instructions or information in this Security Advisory.
______________________________________________________________________________
- -----------------------
- --- Issue Specifics ---
- -----------------------
The at(1) program is used by local users to read commands from standard
input to be executed at a later time. These commands are run as the
user using the at(1) program.
In normal operation, the at(1) program runs as a setuid root privileged
program inorder to perform its tasks. Unfortunately, a buffer overrun
has been discovered in the at(1) program which could allow arbitrary
commands to be run as the privileged user root.
Silicon Graphics Inc. has investigated the issue and recommends the
following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED
that these measures be implemented on ALL SGI systems. This issue will
be corrected in future releases of IRIX.
- --------------
- --- Impact ---
- --------------
The at(1) program is installed on all Silicon Graphics IRIX systems by
default.
A local account is required in order to exploit this vulnerability both
locally and remotely.
This vulnerability can be utilized to execute commands with root
privileges.
This vulnerability has been publically discussed in Usenet newsgroups
and mailing lists and also reported in CERT Advisory CA-97.18.
- --------------------------
- --- Temporary Solution ---
- --------------------------
Although patches are available for this issue, it is realized that
there may be situations where installing the patches immediately may
not be possible.
The steps below can be used to remove the vulnerability by removing
the permissions of the at(1) program.
1) Become the root user on the system.
% /bin/su -
Password:
#
2) Remove the permissions on the at(1) program.
# /bin/chmod 0 /usr/bin/at
************
*** NOTE ***
************
Removing the permissions from the at(1)
program will prevent the program from
executing, even for root user.
3) Return to previous level.
# exit
$
- ----------------
- --- Solution ---
- ----------------
OS Version Vulnerable? Patch # Other Actions
---------- ----------- ------- -------------
IRIX 3.x yes not avail Note 1
IRIX 4.x yes not avail Note 1
IRIX 5.0.x yes not avail Note 1
IRIX 5.1.x yes not avail Note 1
IRIX 5.2 yes not avail Note 1
IRIX 5.3 yes 2225
IRIX 6.0.x yes not avail Note 1
IRIX 6.1 yes not avail Note 1
IRIX 6.2 yes 2230
IRIX 6.3 yes 2232
IRIX 6.4 yes 2233
NOTES
1) upgrade operating system or see "Temporary Solution" section.
Patches are available via anonymous FTP and your service/support provider.
The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its
mirror, ftp.sgi.com. Security information and patches can be found
in the ~ftp/security and ~ftp/patches directories, respectfully.
##### Patch File Checksums ####
The actual patch will be a tar file containing the following files:
Filename: README.patch.2225
Algorithm #1 (sum -r): 17470 8 README.patch.2225
Algorithm #2 (sum): 32106 8 README.patch.2225
MD5 checksum: 42A1501001E07C40544C93859E7C6E1B
Filename: patchSG0002225
Algorithm #1 (sum -r): 12944 1 patchSG0002225
Algorithm #2 (sum): 30466 1 patchSG0002225
MD5 checksum: C8158D7B6552684FB4B89949627F6CFC
Filename: patchSG0002225.eoe1_sw
Algorithm #1 (sum -r): 58136 49 patchSG0002225.eoe1_sw
Algorithm #2 (sum): 9067 49 patchSG0002225.eoe1_sw
MD5 checksum: A97C10C3461E249585895CA72652A2E3
Filename: patchSG0002225.idb
Algorithm #1 (sum -r): 15748 1 patchSG0002225.idb
Algorithm #2 (sum): 34188 1 patchSG0002225.idb
MD5 checksum: 0B7C6DC178A5C327E53F875A113E1971
Filename: README.patch.2230
Algorithm #1 (sum -r): 58607 17 README.patch.2230
Algorithm #2 (sum): 35215 17 README.patch.2230
MD5 checksum: 4340DCE3BA3469941F1361BB6208EDB1
Filename: patchSG0002230
Algorithm #1 (sum -r): 46535 2 patchSG0002230
Algorithm #2 (sum): 5679 2 patchSG0002230
MD5 checksum: 945EC35A9340CF2A74721701589AE3EC
Filename: patchSG0002230.eoe_man
Algorithm #1 (sum -r): 34340 606 patchSG0002230.eoe_man
Algorithm #2 (sum): 28556 606 patchSG0002230.eoe_man
MD5 checksum: 83D6EF44CAE016B7C509A63A450E2EEA
Filename: patchSG0002230.eoe_sw
Algorithm #1 (sum -r): 21159 1954 patchSG0002230.eoe_sw
Algorithm #2 (sum): 52976 1954 patchSG0002230.eoe_sw
MD5 checksum: E3CA682069D56992A92FC0B1385C8C6F
Filename: patchSG0002230.idb
Algorithm #1 (sum -r): 27782 15 patchSG0002230.idb
Algorithm #2 (sum): 1450 15 patchSG0002230.idb
MD5 checksum: 42654CBFA3AD648A9DBBDAA5C3115E31
Filename: README.patch.2232
Algorithm #1 (sum -r): 30727 12 README.patch.2232
Algorithm #2 (sum): 55743 12 README.patch.2232
MD5 checksum: DD9402D2434B1513A3B9886D70CD9243
Filename: patchSG0002232
Algorithm #1 (sum -r): 55916 3 patchSG0002232
Algorithm #2 (sum): 20486 3 patchSG0002232
MD5 checksum: FE63680542E429EA91D33AA15EB06537
Filename: patchSG0002232.eoe_man
Algorithm #1 (sum -r): 43804 36 patchSG0002232.eoe_man
Algorithm #2 (sum): 27383 36 patchSG0002232.eoe_man
MD5 checksum: 6EE21B2D5362295BDC20D5F84BA7DEC4
Filename: patchSG0002232.eoe_sw
Algorithm #1 (sum -r): 03690 421 patchSG0002232.eoe_sw
Algorithm #2 (sum): 11833 421 patchSG0002232.eoe_sw
MD5 checksum: C5AD8C10999347F8FA67871B5B98CB63
Filename: patchSG0002232.idb
Algorithm #1 (sum -r): 38374 4 patchSG0002232.idb
Algorithm #2 (sum): 4337 4 patchSG0002232.idb
MD5 checksum: 0610B31450652A09F343E2B1ED3E939A
Filename: README.patch.2233
Algorithm #1 (sum -r): 51881 11 README.patch.2233
Algorithm #2 (sum): 41695 11 README.patch.2233
MD5 checksum: 5D7F90A9AE9F2A483059E6D8D08DF317
Filename: patch2233.pgp.and.chksums
Algorithm #1 (sum -r): 00000 0 patch2233.pgp.and.chksums
Algorithm #2 (sum): 0 0 patch2233.pgp.and.chksums
MD5 checksum: D41D8CD98F00B204E9800998ECF8427E
Filename: patchSG0002233
Algorithm #1 (sum -r): 18405 3 patchSG0002233
Algorithm #2 (sum): 23610 3 patchSG0002233
MD5 checksum: 462695A8E5958C4B6A78960F001A2351
Filename: patchSG0002233.eoe_man
Algorithm #1 (sum -r): 43804 36 patchSG0002233.eoe_man
Algorithm #2 (sum): 27383 36 patchSG0002233.eoe_man
MD5 checksum: 6EE21B2D5362295BDC20D5F84BA7DEC4
Filename: patchSG0002233.eoe_sw
Algorithm #1 (sum -r): 24542 347 patchSG0002233.eoe_sw
Algorithm #2 (sum): 6782 347 patchSG0002233.eoe_sw
MD5 checksum: B5D1408146E7B71B1F5A8290ABCF5A4F
Filename: patchSG0002233.idb
Algorithm #1 (sum -r): 50085 3 patchSG0002233.idb
Algorithm #2 (sum): 41850 3 patchSG0002233.idb
MD5 checksum: B41E8A31941E47BD46682CFB4641882F
- ------------------------
- --- Acknowledgments ---
- ------------------------
Silicon Graphics wishes to thank the CERT Coordination Center
for their assistance in this matter.
- -----------------------------------------------------------
- --- Silicon Graphics Inc. Security Information/Contacts ---
- -----------------------------------------------------------
If there are questions about this document, email can be sent to
[email protected].
------oOo------
Silicon Graphics provides security information and patches for
use by the entire SGI community. This information is freely
available to any person needing the information and is available
via anonymous FTP and the Web.
The primary SGI anonymous FTP site for security information and patches
is sgigate.sgi.com (204.94.209.1). Security information and patches
are located under the directories ~ftp/security and ~ftp/patches,
respectively. The Silicon Graphics Security Headquarters Web page is
accessible at the URL http://www.sgi.com/Support/security/security.html.
For issues with the patches on the FTP sites, email can be sent to
[email protected].
For assistance obtaining or working with security patches, please
contact your SGI support provider.
------oOo------
Silicon Graphics provides a free security mailing list service
called wiretap and encourages interested parties to self-subscribe
to receive (via email) all SGI Security Advisories when they are
released. Subscribing to the mailing list can be done via the Web
(http://www.sgi.com/Support/security/wiretap.html) or by sending email
to SGI as outlined below.
% mail [email protected]
subscribe wiretap <YourEmailAddress>
end
^d
In the example above, <YourEmailAddress> is the email address that you
wish the mailing list information sent to. The word end must be on a
separate line to indicate the end of the body of the message. The
control-d (^d) is used to indicate to the mail program that you are
finished composing the mail message.
------oOo------
Silicon Graphics provides a comprehensive customer World Wide Web site.
This site is located at http://www.sgi.com/Support/security/security.html.
------oOo------
For reporting *NEW* SGI security issues, email can be sent to
[email protected] or contact your SGI support provider. A
support contract is not required for submitting a security report.
______________________________________________________________________________
This information is provided freely to all interested parties and may
be redistributed provided that it is not altered in any way, Silicon
Graphics is appropriately credited and the document retains and
includes its valid PGP signature.
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From: SGI Security Coordinator <[email protected]>
Subject: Silicon Graphics Security Advisory 19971101-01-PX - libXt
Security Issues
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-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
Silicon Graphics Inc. Security Advisory
Title: libXt Security Issues
Title: CERT CA-97.11
Number: 19971101-01-PX
Date: November 18, 1997
______________________________________________________________________________
Silicon Graphics provides this information freely to the SGI user community
for its consideration, interpretation, implementation and use. Silicon
Graphics recommends that this information be acted upon as soon as possible.
Silicon Graphics provides the information in this Security Advisory on
an "AS-IS" basis only, and disclaims all warranties with respect thereto,
express, implied or otherwise, including, without limitation, any warranty
of merchantability or fitness for a particular purpose. In no event shall
Silicon Graphics be liable for any loss of profits, loss of business, loss
of data or for any indirect, special, exemplary, incidental or consequential
damages of any kind arising from your use of, failure to use or improper
use of any of the instructions or information in this Security Advisory.
______________________________________________________________________________
- -----------------------
- --- Issue Specifics ---
- -----------------------
In disussions on public newsgroups and mailing lists, buffer overruns
in the Xt library of the X Windowing System and X application programs
have been discussed.
Silicon Graphics Inc. has investigated the issue and recommends the
following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED
that these measures be implemented on ALL SGI systems. This issue will
be corrected in future releases of IRIX.
- --------------
- --- Impact ---
- --------------
All Silicon Graphics computer systems running IRIX 4.x, IRIX 5.x
and IRIX 6.x utilize the X Windowing system and have X applications
by default.
A local account is required in order to exploit these vulnerabilities
both locally and remotely.
This issue has been publically disclosed and discussed in several
public forums newsgroups and mailing lists in addition to
security advisories CERT CA-97.11.
- --------------------------
- --- Temporary Solution ---
- --------------------------
Unfortunately, there are no immediate or temporary workarounds for
this issue. The issue can only be addressed with a patch.
- ----------------
- --- Solution ---
- ----------------
OS Version Vulnerable? Patch # Other Actions
---------- ----------- ------- -------------
IRIX 3.x no
IRIX 4.x yes not avail Note 1
IRIX 5.0.x yes not avail Note 1
IRIX 5.1.x yes not avail Note 1
IRIX 5.2 yes not avail Note 1
IRIX 5.3 yes 2155
IRIX 6.0.x yes not avail Note 1
IRIX 6.1 yes not avail Note 1
IRIX 6.2 yes 2154
IRIX 6.3 yes 2153
IRIX 6.4 yes 2396
NOTES
1) upgrade to supported operating system version
Patches are available via anonymous FTP and your service/support provider.
The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its
mirror, ftp.sgi.com. Security information and patches can be found
in the ~ftp/security and ~ftp/patches directories, respectfully.
##### Patch File Checksums ####
The actual patch will be a tar file containing the following files:
Filename: README.patch.2153
Algorithm #1 (sum -r): 25316 10 README.patch.2153
Algorithm #2 (sum): 65501 10 README.patch.2153
MD5 checksum: 61E23CC48D1295A14FF1BD14F1AE63E9
Filename: patchSG0002153
Algorithm #1 (sum -r): 63016 6 patchSG0002153
Algorithm #2 (sum): 54172 6 patchSG0002153
MD5 checksum: 283699BC58ABFF6F7C8BA3713D0AEEC4
Filename: patchSG0002153.idb
Algorithm #1 (sum -r): 28889 8 patchSG0002153.idb
Algorithm #2 (sum): 46999 8 patchSG0002153.idb
MD5 checksum: B556DB55B2B5CF749C54E1AB5A4864A0
Filename: patchSG0002153.x_dev_sw
Algorithm #1 (sum -r): 03700 1039 patchSG0002153.x_dev_sw
Algorithm #2 (sum): 2287 1039 patchSG0002153.x_dev_sw
MD5 checksum: 2D95358E6433CDBE96D52F62D08A4CD3
Filename: patchSG0002153.x_dev_sw32
Algorithm #1 (sum -r): 64841 1251 patchSG0002153.x_dev_sw32
Algorithm #2 (sum): 38376 1251 patchSG0002153.x_dev_sw32
MD5 checksum: EE7BE878CB7486BBA689DE31C49F2C2D
Filename: patchSG0002153.x_dev_sw64
Algorithm #1 (sum -r): 43845 1344 patchSG0002153.x_dev_sw64
Algorithm #2 (sum): 31671 1344 patchSG0002153.x_dev_sw64
MD5 checksum: 02803C4F21D9440D6B365B5E051260C6
Filename: patchSG0002153.x_eoe_sw
Algorithm #1 (sum -r): 43004 3102 patchSG0002153.x_eoe_sw
Algorithm #2 (sum): 56526 3102 patchSG0002153.x_eoe_sw
MD5 checksum: 4E50E4D94BFEA5652D20CE08BD120D0D
Filename: patchSG0002153.x_eoe_sw32
Algorithm #1 (sum -r): 38854 3358 patchSG0002153.x_eoe_sw32
Algorithm #2 (sum): 910 3358 patchSG0002153.x_eoe_sw32
MD5 checksum: B5701DA482684D031D40249D6096971B
Filename: patchSG0002153.x_eoe_sw64
Algorithm #1 (sum -r): 24290 3562 patchSG0002153.x_eoe_sw64
Algorithm #2 (sum): 43506 3562 patchSG0002153.x_eoe_sw64
MD5 checksum: 73709C1BAF1B6A08DB6966DEB435B668
Filename: README.patch.2154
Algorithm #1 (sum -r): 02162 15 README.patch.2154
Algorithm #2 (sum): 39280 15 README.patch.2154
MD5 checksum: 5EEF5483CBDC8D804A29A0473230D277
Filename: patchSG0002154
Algorithm #1 (sum -r): 40324 14 patchSG0002154
Algorithm #2 (sum): 59115 14 patchSG0002154
MD5 checksum: 273ABFD8DAFDFC05BAA4727A39FB93D7
Filename: patchSG0002154.idb
Algorithm #1 (sum -r): 64074 7 patchSG0002154.idb
Algorithm #2 (sum): 61404 7 patchSG0002154.idb
MD5 checksum: AF140498F7B12405046D2647E3DAFD73
Filename: patchSG0002154.x_dev_sw
Algorithm #1 (sum -r): 64669 1038 patchSG0002154.x_dev_sw
Algorithm #2 (sum): 43733 1038 patchSG0002154.x_dev_sw
MD5 checksum: 59113DE469DDD394ED11B9EC9E0BAD3A
Filename: patchSG0002154.x_dev_sw32
Algorithm #1 (sum -r): 09060 1252 patchSG0002154.x_dev_sw32
Algorithm #2 (sum): 50637 1252 patchSG0002154.x_dev_sw32
MD5 checksum: 801FBBD3B849DCCCCE32581006248194
Filename: patchSG0002154.x_dev_sw64
Algorithm #1 (sum -r): 45827 1344 patchSG0002154.x_dev_sw64
Algorithm #2 (sum): 7788 1344 patchSG0002154.x_dev_sw64
MD5 checksum: 4CE9812E5FBEAAA3BEE07EA1C8430C5A
Filename: patchSG0002154.x_eoe_sw
Algorithm #1 (sum -r): 14887 3034 patchSG0002154.x_eoe_sw
Algorithm #2 (sum): 11241 3034 patchSG0002154.x_eoe_sw
MD5 checksum: BC5AA5A65C7560CD4734A68E73F3F853
Filename: patchSG0002154.x_eoe_sw32
Algorithm #1 (sum -r): 57921 2726 patchSG0002154.x_eoe_sw32
Algorithm #2 (sum): 41588 2726 patchSG0002154.x_eoe_sw32
MD5 checksum: 54C206869F69397875FD93216D991930
Filename: patchSG0002154.x_eoe_sw64
Algorithm #1 (sum -r): 53814 2868 patchSG0002154.x_eoe_sw64
Algorithm #2 (sum): 839 2868 patchSG0002154.x_eoe_sw64
MD5 checksum: DB3862DE7C2E986E13E3E14C5E161E5E
Filename: README.patch.2155
Algorithm #1 (sum -r): 21907 13 README.patch.2155
Algorithm #2 (sum): 27373 13 README.patch.2155
MD5 checksum: E6DABFBEE2945099D42F6063A11B6A7E
Filename: patchSG0002155
Algorithm #1 (sum -r): 02117 3 patchSG0002155
Algorithm #2 (sum): 5954 3 patchSG0002155
MD5 checksum: 35A01C9F197B55E05846A49F86001F33
Filename: patchSG0002155.idb
Algorithm #1 (sum -r): 36349 2 patchSG0002155.idb
Algorithm #2 (sum): 1931 2 patchSG0002155.idb
MD5 checksum: 7CE668036AABD4B63E65AF2E18A85079
Filename: patchSG0002155.x_dev_sw
Algorithm #1 (sum -r): 40176 1005 patchSG0002155.x_dev_sw
Algorithm #2 (sum): 14410 1005 patchSG0002155.x_dev_sw
MD5 checksum: FB9E15AB9A24418A771D1A4239AACA9D
Filename: patchSG0002155.x_eoe_sw
Algorithm #1 (sum -r): 42558 2534 patchSG0002155.x_eoe_sw
Algorithm #2 (sum): 60261 2534 patchSG0002155.x_eoe_sw
MD5 checksum: 249A8BA0FD006A6543ED58548A961086
Filename: README.patch.2396
Algorithm #1 (sum -r): 21490 10 README.patch.2396
Algorithm #2 (sum): 59973 10 README.patch.2396
MD5 checksum: 51FBF3D675E4E43F2DF105FD60173D7E
Filename: patchSG0002396
Algorithm #1 (sum -r): 31021 6 patchSG0002396
Algorithm #2 (sum): 59122 6 patchSG0002396
MD5 checksum: 1CB84057C049D0AEEF1769147484D51D
Filename: patchSG0002396.eoe_sw
Algorithm #1 (sum -r): 44998 7 patchSG0002396.eoe_sw
Algorithm #2 (sum): 42468 7 patchSG0002396.eoe_sw
MD5 checksum: 948C51F29D9B18C71211551F2A9E2786
Filename: patchSG0002396.idb
Algorithm #1 (sum -r): 44652 6 patchSG0002396.idb
Algorithm #2 (sum): 50192 6 patchSG0002396.idb
MD5 checksum: 88153D362FE99D3C38B148649926B5E9
Filename: patchSG0002396.x_dev_sw
Algorithm #1 (sum -r): 21683 2337 patchSG0002396.x_dev_sw
Algorithm #2 (sum): 1525 2337 patchSG0002396.x_dev_sw
MD5 checksum: D7A1332304D0053EE790F64C0C0D6B27
Filename: patchSG0002396.x_dev_sw64
Algorithm #1 (sum -r): 49044 1361 patchSG0002396.x_dev_sw64
Algorithm #2 (sum): 14474 1361 patchSG0002396.x_dev_sw64
MD5 checksum: 38F89FD774611E2D8DC65358C3CF809F
Filename: patchSG0002396.x_eoe_sw
Algorithm #1 (sum -r): 26996 5177 patchSG0002396.x_eoe_sw
Algorithm #2 (sum): 42378 5177 patchSG0002396.x_eoe_sw
MD5 checksum: 909745597814CC56DD5466CA4BEC3411
Filename: patchSG0002396.x_eoe_sw64
Algorithm #1 (sum -r): 25487 2832 patchSG0002396.x_eoe_sw64
Algorithm #2 (sum): 20908 2832 patchSG0002396.x_eoe_sw64
MD5 checksum: E683B61D66B99B1A055AB8ACFFE28C32
- ------------------------
- --- Acknowledgments ---
- ------------------------
Silicon Graphics wishes to thank the CERT Coordination Center
for their assistance in this matter.
- -----------------------------------------------------------
- --- Silicon Graphics Inc. Security Information/Contacts ---
- -----------------------------------------------------------
If there are questions about this document, email can be sent to
[email protected].
------oOo------
Silicon Graphics provides security information and patches for
use by the entire SGI community. This information is freely
available to any person needing the information and is available
via anonymous FTP and the Web.
The primary SGI anonymous FTP site for security information and patches
is sgigate.sgi.com (204.94.209.1). Security information and patches
are located under the directories ~ftp/security and ~ftp/patches,
respectively. The Silicon Graphics Security Headquarters Web page is
accessible at the URL http://www.sgi.com/Support/security/security.html.
For issues with the patches on the FTP sites, email can be sent to
[email protected].
For assistance obtaining or working with security patches, please
contact your SGI support provider.
------oOo------
Silicon Graphics provides a free security mailing list service
called wiretap and encourages interested parties to self-subscribe
to receive (via email) all SGI Security Advisories when they are
released. Subscribing to the mailing list can be done via the Web
(http://www.sgi.com/Support/security/wiretap.html) or by sending email
to SGI as outlined below.
% mail [email protected]
subscribe wiretap <YourEmailAddress>
end
^d
In the example above, <YourEmailAddress> is the email address that you
wish the mailing list information sent to. The word end must be on a
separate line to indicate the end of the body of the message. The
control-d (^d) is used to indicate to the mail program that you are
finished composing the mail message.
------oOo------
Silicon Graphics provides a comprehensive customer World Wide Web site.
This site is located at http://www.sgi.com/Support/security/security.html.
------oOo------
For reporting *NEW* SGI security issues, email can be sent to
[email protected] or contact your SGI support provider. A
support contract is not required for submitting a security report.
______________________________________________________________________________
This information is provided freely to all interested parties and may
be redistributed provided that it is not altered in any way, Silicon
Graphics is appropriately credited and the document retains and
includes its valid PGP signature.
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From: SGI Security Coordinator <[email protected]>
Subject: Silicon Graphics Security Advisory - 19970507-02-PX - IRIX eject
Buffer Overrun Vulnerability
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To: [email protected]
Status:
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DISTRIBUTION RESTRICTIONS - NONE - FOR PUBLIC RELEASE
-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
Silicon Graphics Inc. Security Advisory
Title: IRIX eject Buffer Overrun Vulnerability
Title: AUSCERT Advisory AA-97.21 and CERT Advisory CA-97.21
Number: 19970507-02-PX
Date: November 18, 1997
______________________________________________________________________________
Silicon Graphics provides this information freely to the SGI user community
for its consideration, interpretation, implementation and use. Silicon
Graphics recommends that this information be acted upon as soon as possible.
Silicon Graphics provides the information in this Security Advisory on
an "AS-IS" basis only, and disclaims all warranties with respect thereto,
express, implied or otherwise, including, without limitation, any warranty
of merchantability or fitness for a particular purpose. In no event shall
Silicon Graphics be liable for any loss of profits, loss of business, loss
of data or for any indirect, special, exemplary, incidental or consequential
damages of any kind arising from your use of, failure to use or improper
use of any of the instructions or information in this Security Advisory.
______________________________________________________________________________
- -----------------------
- --- Issue Specifics ---
- -----------------------
The eject(1) program is used to eject removable media such as floppy,
CDROM, and tape.
The eject(1) program is setuid root and as part of normal usage accepts
user arguments to operate.
It has been determined that an appropriately crafted set of arguments
could be input to the eject(1) program allowing execution of arbitrary
user commands with root privileges. This resulting buffer overflow
condition is considered a security vulnerability.
Silicon Graphics Inc. has investigated the issue and recommends the
following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED
that these measures be implemented on ALL SGI systems. This issue will
be corrected in future releases of IRIX.
- --------------
- --- Impact ---
- --------------
The eject(1) program (/usr/sbin/eject) is installed on all IRIX
systems by default.
A local account is required in order to exploit this vulnerability.
With a local account the vulnerability can be exploited both
locally and remotely.
This vulnerability can be utilized to execute commands with root
privileges.
This security issue has been publically disclosed and discussed in
several public forums including the BUGTRAQ mailing list. Additionally,
security advisories AUSCERT AA-97.21 and CERT CA-97.21 have been
publically released on the issue.
- --------------------------
- --- Temporary Solution ---
- --------------------------
Although patches are available for this issue, it is realized that
there may be situations where installing the patches immediately may
not be possible.
The steps below can be used to remove the vulnerability by removing
the permissions of the eject program.
1) Become the root user on the system.
% /bin/su -
Password:
#
2) Change the permissions on the eject program.
# /bin/chmod 500 /usr/sbin/eject
************
*** NOTE ***
************
Removing the setuid root permissions from the eject
program will prevent non-root users and applications
from using the eject program.
3) Return to previous level.
# exit
$
- ----------------
- --- Solution ---
- ----------------
OS Version Vulnerable? Patch # Other Actions
---------- ----------- ------- -------------
IRIX 3.x unknown not avail Note 1
IRIX 4.x unknown not avail Note 1
IRIX 5.0.x yes not avail Note 1
IRIX 5.1.x yes not avail Note 1
IRIX 5.2 yes not avail Note 1
IRIX 5.3 yes 2228
IRIX 6.0.x yes not avail Note 1
IRIX 6.1 yes not avail Note 1
IRIX 6.2 yes 2177
IRIX 6.3 yes 2232
IRIX 6.4 yes 2233
NOTES
1) upgrade operating system or see "Temporary Solution" section.
Patches are available via anonymous FTP and your service/support provider.
The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its
mirror, ftp.sgi.com. Security information and patches can be found
in the ~ftp/security and ~ftp/patches directories, respectfully.
##### Patch File Checksums ####
The actual patch will be a tar file containing the following files:
Filename: README.patch.2177
Algorithm #1 (sum -r): 24281 8 README.patch.2177
Algorithm #2 (sum): 27018 8 README.patch.2177
MD5 checksum: 7A3DF720DD7D6B1316E9937050233280
Filename: patchSG0002177
Algorithm #1 (sum -r): 43678 1 patchSG0002177
Algorithm #2 (sum): 29631 1 patchSG0002177
MD5 checksum: F97FBC0C9E17C9BFFE4ECC03924D8250
Filename: patchSG0002177.eoe_sw
Algorithm #1 (sum -r): 17436 115 patchSG0002177.eoe_sw
Algorithm #2 (sum): 24229 115 patchSG0002177.eoe_sw
MD5 checksum: F01742532D483B02920F2837DB992CCA
Filename: patchSG0002177.idb
Algorithm #1 (sum -r): 20506 2 patchSG0002177.idb
Algorithm #2 (sum): 59240 2 patchSG0002177.idb
MD5 checksum: E52E021C27786A8047B95E0477B3B946
Filename: README.patch.2228
Algorithm #1 (sum -r): 56233 7 README.patch.2228
Algorithm #2 (sum): 12603 7 README.patch.2228
MD5 checksum: 30D3A289BD8219F65094F5C6D0906D00
Filename: patchSG0002228
Algorithm #1 (sum -r): 32199 1 patchSG0002228
Algorithm #2 (sum): 26600 1 patchSG0002228
MD5 checksum: 1D2A2E79B74B0A5BDEE7775C44E766D8
Filename: patchSG0002228.eoe1_sw
Algorithm #1 (sum -r): 28849 53 patchSG0002228.eoe1_sw
Algorithm #2 (sum): 11773 53 patchSG0002228.eoe1_sw
MD5 checksum: DBFBCD02E45A9A9468EBAEB115908B1D
Filename: patchSG0002228.idb
Algorithm #1 (sum -r): 04872 1 patchSG0002228.idb
Algorithm #2 (sum): 34402 1 patchSG0002228.idb
MD5 checksum: E99CCA436F10736924B10F9D9D6A5978
Filename: README.patch.2232
Algorithm #1 (sum -r): 30727 12 README.patch.2232
Algorithm #2 (sum): 55743 12 README.patch.2232
MD5 checksum: DD9402D2434B1513A3B9886D70CD9243
Filename: patchSG0002232
Algorithm #1 (sum -r): 55916 3 patchSG0002232
Algorithm #2 (sum): 20486 3 patchSG0002232
MD5 checksum: FE63680542E429EA91D33AA15EB06537
Filename: patchSG0002232.eoe_man
Algorithm #1 (sum -r): 43804 36 patchSG0002232.eoe_man
Algorithm #2 (sum): 27383 36 patchSG0002232.eoe_man
MD5 checksum: 6EE21B2D5362295BDC20D5F84BA7DEC4
Filename: patchSG0002232.eoe_sw
Algorithm #1 (sum -r): 03690 421 patchSG0002232.eoe_sw
Algorithm #2 (sum): 11833 421 patchSG0002232.eoe_sw
MD5 checksum: C5AD8C10999347F8FA67871B5B98CB63
Filename: patchSG0002232.idb
Algorithm #1 (sum -r): 38374 4 patchSG0002232.idb
Algorithm #2 (sum): 4337 4 patchSG0002232.idb
MD5 checksum: 0610B31450652A09F343E2B1ED3E939A
Filename: README.patch.2233
Algorithm #1 (sum -r): 51881 11 README.patch.2233
Algorithm #2 (sum): 41695 11 README.patch.2233
MD5 checksum: 5D7F90A9AE9F2A483059E6D8D08DF317
Filename: patch2233.pgp.and.chksums
Algorithm #1 (sum -r): 00000 0 patch2233.pgp.and.chksums
Algorithm #2 (sum): 0 0 patch2233.pgp.and.chksums
MD5 checksum: D41D8CD98F00B204E9800998ECF8427E
Filename: patchSG0002233
Algorithm #1 (sum -r): 18405 3 patchSG0002233
Algorithm #2 (sum): 23610 3 patchSG0002233
MD5 checksum: 462695A8E5958C4B6A78960F001A2351
Filename: patchSG0002233.eoe_man
Algorithm #1 (sum -r): 43804 36 patchSG0002233.eoe_man
Algorithm #2 (sum): 27383 36 patchSG0002233.eoe_man
MD5 checksum: 6EE21B2D5362295BDC20D5F84BA7DEC4
Filename: patchSG0002233.eoe_sw
Algorithm #1 (sum -r): 24542 347 patchSG0002233.eoe_sw
Algorithm #2 (sum): 6782 347 patchSG0002233.eoe_sw
MD5 checksum: B5D1408146E7B71B1F5A8290ABCF5A4F
Filename: patchSG0002233.idb
Algorithm #1 (sum -r): 50085 3 patchSG0002233.idb
Algorithm #2 (sum): 41850 3 patchSG0002233.idb
MD5 checksum: B41E8A31941E47BD46682CFB4641882F
- ------------------------
- --- Acknowledgments ---
- ------------------------
Silicon Graphics wishes to thank the worldwide Internet community and the
AUSCERT and CERT Coordination Center organizations for their assistance
in this matter.
- -----------------------------------------------------------
- --- Silicon Graphics Inc. Security Information/Contacts ---
- -----------------------------------------------------------
If there are questions about this document, email can be sent to
[email protected].
------oOo------
Silicon Graphics provides security information and patches for
use by the entire SGI community. This information is freely
available to any person needing the information and is available
via anonymous FTP and the Web.
The primary SGI anonymous FTP site for security information and patches
is sgigate.sgi.com (204.94.209.1). Security information and patches
are located under the directories ~ftp/security and ~ftp/patches,
respectively. The Silicon Graphics Security Headquarters Web page is
accessible at the URL http://www.sgi.com/Support/security/security.html.
For issues with the patches on the FTP sites, email can be sent to
[email protected].
For assistance obtaining or working with security patches, please
contact your SGI support provider.
------oOo------
Silicon Graphics provides a free security mailing list service
called wiretap and encourages interested parties to self-subscribe
to receive (via email) all SGI Security Advisories when they are
released. Subscribing to the mailing list can be done via the Web
(http://www.sgi.com/Support/security/wiretap.html) or by sending email
to SGI as outlined below.
% mail [email protected]
subscribe wiretap <YourEmailAddress>
end
^d
In the example above, <YourEmailAddress> is the email address that you
wish the mailing list information sent to. The word end must be on a
separate line to indicate the end of the body of the message. The
control-d (^d) is used to indicate to the mail program that you are
finished composing the mail message.
------oOo------
Silicon Graphics provides a comprehensive customer World Wide Web site.
This site is located at http://www.sgi.com/Support/security/security.html.
------oOo------
For reporting *NEW* SGI security issues, email can be sent to
[email protected] or contact your SGI support provider. A
support contract is not required for submitting a security report.
______________________________________________________________________________
This information is provided freely to all interested parties and may
be redistributed provided that it is not altered in any way, Silicon
Graphics is appropriately credited and the document retains and
includes its valid PGP signature.
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Date: Tue, 18 Nov 1997 15:22:58 -0800
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Sender: Bugtraq List <[email protected]>
From: SGI Security Coordinator <[email protected]>
Subject: SGI Security Advisory 19970505-02-PX - IRIX df Buffer Overrun
Vulnerability
X-To: [email protected]
To: [email protected]
Status:
X-PMFLAGS: 34078848 0
DISTRIBUTION RESTRICTIONS - NONE - FOR PUBLIC RELEASE
-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
Silicon Graphics Inc. Security Advisory
Title: IRIX df Buffer Overrun Vulnerability
Title: AUSCERT Advisory AA-97.19 and CERT Advisory CA-97.21
Number: 19970505-02-PX
Date: November 18, 1997
______________________________________________________________________________
Silicon Graphics provides this information freely to the SGI user community
for its consideration, interpretation, implementation and use. Silicon
Graphics recommends that this information be acted upon as soon as possible.
Silicon Graphics provides the information in this Security Advisory on
an "AS-IS" basis only, and disclaims all warranties with respect thereto,
express, implied or otherwise, including, without limitation, any warranty
of merchantability or fitness for a particular purpose. In no event shall
Silicon Graphics be liable for any loss of profits, loss of business, loss
of data or for any indirect, special, exemplary, incidental or consequential
damages of any kind arising from your use of, failure to use or improper
use of any of the instructions or information in this Security Advisory.
______________________________________________________________________________
- -----------------------
- --- Issue Specifics ---
- -----------------------
The df(1) program is used to provide information about disk space
usage on a system.
The df(1) program is setuid root and as part of normal usage accepts
user arguments to operate.
It has been determined that an appropriately crafted set of arguments
could be input to the df(1) program allowing execution of arbitrary
user commands with root privileges. This resulting buffer overflow
condition is considered a security vulnerability.
Silicon Graphics Inc. has investigated the issue and recommends the
following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED
that these measures be implemented on ALL SGI systems. This issue will
be corrected in future releases of IRIX.
- --------------
- --- Impact ---
- --------------
The df(1) program (/sbin/df) is installed on all IRIX systems by
default.
A local account is required in order to exploit this vulnerability.
With a local account the vulnerability can be exploited both
locally and remotely.
This vulnerability can be utilized to execute commands with root
privileges.
This security issue has been publically disclosed and discussed in
several public forums including the BUGTRAQ mailing list. Additionally,
security advisories AUSCERT AA-97.19 and CERT CA-97.21 have been
publically released on the issue.
- --------------------------
- --- Temporary Solution ---
- --------------------------
Although patches are available for this issue, it is realized that
there may be situations where installing the patches immediately may
not be possible.
The steps below can be used to remove the vulnerability by removing
the permissions of the df program.
1) Become the root user on the system.
% /bin/su -
Password:
#
2) Change the permissions on the df program.
# /bin/chmod 500 /sbin/df
************
*** NOTE ***
************
Removing the setuid root permissions from the df
program will prevent non-root users and applications
from using the df program.
3) Return to previous level.
# exit
$
- ----------------
- --- Solution ---
- ----------------
OS Version Vulnerable? Patch # Other Actions
---------- ----------- ------- -------------
IRIX 3.x unknown not avail Note 1
IRIX 4.x unknown not avail Note 1
IRIX 5.0.x yes not avail Note 1
IRIX 5.1.x yes not avail Note 1
IRIX 5.2 yes not avail Note 1
IRIX 5.3 yes 2224
IRIX 6.0.x yes not avail Note 1
IRIX 6.1 yes not avail Note 1
IRIX 6.2 yes 2177
IRIX 6.3 yes 2232
IRIX 6.4 yes 2233
NOTES
1) upgrade operating system or see "Temporary Solution" section.
Patches are available via anonymous FTP and your service/support provider.
The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its
mirror, ftp.sgi.com. Security information and patches can be found
in the ~ftp/security and ~ftp/patches directories, respectfully.
##### Patch File Checksums ####
The actual patch will be a tar file containing the following files:
Filename: README.patch.2177
Algorithm #1 (sum -r): 24281 8 README.patch.2177
Algorithm #2 (sum): 27018 8 README.patch.2177
MD5 checksum: 7A3DF720DD7D6B1316E9937050233280
Filename: patchSG0002177
Algorithm #1 (sum -r): 43678 1 patchSG0002177
Algorithm #2 (sum): 29631 1 patchSG0002177
MD5 checksum: F97FBC0C9E17C9BFFE4ECC03924D8250
Filename: patchSG0002177.eoe_sw
Algorithm #1 (sum -r): 17436 115 patchSG0002177.eoe_sw
Algorithm #2 (sum): 24229 115 patchSG0002177.eoe_sw
MD5 checksum: F01742532D483B02920F2837DB992CCA
Filename: patchSG0002177.idb
Algorithm #1 (sum -r): 20506 2 patchSG0002177.idb
Algorithm #2 (sum): 59240 2 patchSG0002177.idb
MD5 checksum: E52E021C27786A8047B95E0477B3B946
Filename: README.patch.2224
Algorithm #1 (sum -r): 06375 23 README.patch.2224
Algorithm #2 (sum): 65399 23 README.patch.2224
MD5 checksum: A8965CB89FF91CCE1BEC0EA31F057F2B
Filename: patchSG0002224
Algorithm #1 (sum -r): 32725 10 patchSG0002224
Algorithm #2 (sum): 11598 10 patchSG0002224
MD5 checksum: E40BC7206484A9CC583C67F8BEDCDB1A
Filename: patchSG0002224.eoe1_sw
Algorithm #1 (sum -r): 43776 2095 patchSG0002224.eoe1_sw
Algorithm #2 (sum): 16531 2095 patchSG0002224.eoe1_sw
MD5 checksum: B538973E5982C82B7450D02CCAC3F601
Filename: patchSG0002224.eoe2_sw
Algorithm #1 (sum -r): 23026 643 patchSG0002224.eoe2_sw
Algorithm #2 (sum): 24004 643 patchSG0002224.eoe2_sw
MD5 checksum: 6FCDDD383A115B97F9A884474AEFD3BD
Filename: patchSG0002224.idb
Algorithm #1 (sum -r): 46992 18 patchSG0002224.idb
Algorithm #2 (sum): 4590 18 patchSG0002224.idb
MD5 checksum: 16F15C4EBB396F49B62361D030801058
Filename: README.patch.2232
Algorithm #1 (sum -r): 30727 12 README.patch.2232
Algorithm #2 (sum): 55743 12 README.patch.2232
MD5 checksum: DD9402D2434B1513A3B9886D70CD9243
Filename: patchSG0002232
Algorithm #1 (sum -r): 55916 3 patchSG0002232
Algorithm #2 (sum): 20486 3 patchSG0002232
MD5 checksum: FE63680542E429EA91D33AA15EB06537
Filename: patchSG0002232.eoe_man
Algorithm #1 (sum -r): 43804 36 patchSG0002232.eoe_man
Algorithm #2 (sum): 27383 36 patchSG0002232.eoe_man
MD5 checksum: 6EE21B2D5362295BDC20D5F84BA7DEC4
Filename: patchSG0002232.eoe_sw
Algorithm #1 (sum -r): 03690 421 patchSG0002232.eoe_sw
Algorithm #2 (sum): 11833 421 patchSG0002232.eoe_sw
MD5 checksum: C5AD8C10999347F8FA67871B5B98CB63
Filename: patchSG0002232.idb
Algorithm #1 (sum -r): 38374 4 patchSG0002232.idb
Algorithm #2 (sum): 4337 4 patchSG0002232.idb
MD5 checksum: 0610B31450652A09F343E2B1ED3E939A
Filename: README.patch.2233
Algorithm #1 (sum -r): 51881 11 README.patch.2233
Algorithm #2 (sum): 41695 11 README.patch.2233
MD5 checksum: 5D7F90A9AE9F2A483059E6D8D08DF317
Filename: patch2233.pgp.and.chksums
Algorithm #1 (sum -r): 00000 0 patch2233.pgp.and.chksums
Algorithm #2 (sum): 0 0 patch2233.pgp.and.chksums
MD5 checksum: D41D8CD98F00B204E9800998ECF8427E
Filename: patchSG0002233
Algorithm #1 (sum -r): 18405 3 patchSG0002233
Algorithm #2 (sum): 23610 3 patchSG0002233
MD5 checksum: 462695A8E5958C4B6A78960F001A2351
Filename: patchSG0002233.eoe_man
Algorithm #1 (sum -r): 43804 36 patchSG0002233.eoe_man
Algorithm #2 (sum): 27383 36 patchSG0002233.eoe_man
MD5 checksum: 6EE21B2D5362295BDC20D5F84BA7DEC4
Filename: patchSG0002233.eoe_sw
Algorithm #1 (sum -r): 24542 347 patchSG0002233.eoe_sw
Algorithm #2 (sum): 6782 347 patchSG0002233.eoe_sw
MD5 checksum: B5D1408146E7B71B1F5A8290ABCF5A4F
Filename: patchSG0002233.idb
Algorithm #1 (sum -r): 50085 3 patchSG0002233.idb
Algorithm #2 (sum): 41850 3 patchSG0002233.idb
MD5 checksum: B41E8A31941E47BD46682CFB4641882F
- ------------------------
- --- Acknowledgments ---
- ------------------------
Silicon Graphics wishes to thank the worldwide Internet community and the
AUSCERT and CERT Coordination Center organizations for their assistance
in this matter.
- -----------------------------------------------------------
- --- Silicon Graphics Inc. Security Information/Contacts ---
- -----------------------------------------------------------
If there are questions about this document, email can be sent to
[email protected].
------oOo------
Silicon Graphics provides security information and patches for
use by the entire SGI community. This information is freely
available to any person needing the information and is available
via anonymous FTP and the Web.
The primary SGI anonymous FTP site for security information and patches
is sgigate.sgi.com (204.94.209.1). Security information and patches
are located under the directories ~ftp/security and ~ftp/patches,
respectively. The Silicon Graphics Security Headquarters Web page is
accessible at the URL http://www.sgi.com/Support/security/security.html.
For issues with the patches on the FTP sites, email can be sent to
[email protected].
For assistance obtaining or working with security patches, please
contact your SGI support provider.
------oOo------
Silicon Graphics provides a free security mailing list service
called wiretap and encourages interested parties to self-subscribe
to receive (via email) all SGI Security Advisories when they are
released. Subscribing to the mailing list can be done via the Web
(http://www.sgi.com/Support/security/wiretap.html) or by sending email
to SGI as outlined below.
% mail [email protected]
subscribe wiretap <YourEmailAddress>
end
^d
In the example above, <YourEmailAddress> is the email address that you
wish the mailing list information sent to. The word end must be on a
separate line to indicate the end of the body of the message. The
control-d (^d) is used to indicate to the mail program that you are
finished composing the mail message.
------oOo------
Silicon Graphics provides a comprehensive customer World Wide Web site.
This site is located at http://www.sgi.com/Support/security/security.html.
------oOo------
For reporting *NEW* SGI security issues, email can be sent to
[email protected] or contact your SGI support provider. A
support contract is not required for submitting a security report.
______________________________________________________________________________
This information is provided freely to all interested parties and may
be redistributed provided that it is not altered in any way, Silicon
Graphics is appropriately credited and the document retains and
includes its valid PGP signature.
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