Date: Sat, 1 Jan 2000 07:25:23 -0700
From: Justin Tripp <[email protected]>
To: [email protected]Subject: HP's Security Bulletins Digest (fwd)
---------- Forwarded message ----------
Date: Sat, 1 Jan 2000 05:31:36 -0800 (PST)
From: HP Electronic Support Center <[email protected]>
To: [email protected]Subject: Security Bulletins Digest
HP Support Information Digests
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Digest Name: Daily Security Bulletins Digest
Created: Sat Jan 1 3:00:03 PST 2000
Table of Contents:
Document ID Title
--------------- -----------
HPSBUX0001-108 Security Vulnerability in Aserver
The documents are listed below.
-------------------------------------------------------------------------------
Document ID: HPSBUX0001-108
Date Loaded: 19991231
Title: Security Vulnerability in Aserver
-------------------------------------------------------------------------
HEWLETT-PACKARD COMPANY SECURITY ADVISORY: #00108, 01 Jan 2000
-------------------------------------------------------------------------
The information in the following Security Advisory should be acted upon
as soon as possible. Hewlett-Packard Company will not be liable for any
consequences to any customer resulting from customer's failure to fully
implement instructions in this Security Advisory as soon as possible.
-------------------------------------------------------------------------
PROBLEM: /opt/audio/bin/Aserver can be used to gain root access.
PLATFORM: HP9000 Series 7/800 running HP-UX releases 10.X and 11.X
DAMAGE: Root access is possible.
SOLUTION: Until patches are available disable the Aserver (see below).
AVAILABILITY: This advisory will be updated when patches are available.
-------------------------------------------------------------------------
I.
A. Background
A procedure to use /opt/audio/bin/Aserver to gain root access
has been made public.
B. Recommended solution
Until a patch is available, the only two temporary fixes currently
available are to disable /opt/audio/bin/Aserver by removing the
file, or to remove execute permissions as follows.
As root remove functionality with:
chmod 400 /opt/audio/bin/Aserver
As an alternative, if it is absolutely necessary to run the Aserver,
it can be run - yet the system will be vulnerable while the Aserver
is starting.
Again as root:
chmod 6555 /opt/audio/bin/Aserver
[***Warning - /opt/audio/bin/Aserver is now vulnerable.***]
/opt/audio/bin/Aserver -f
[Wait for the parent and child processes to start.]
chmod 400 /opt/audio/bin/Aserver
[/opt/audio/bin/Aserver is now safe.]
C. To subscribe to automatically receive future NEW HP Security
Bulletins from the HP IT Resource Center via electronic mail,
do the following:
Use your browser to get to the HP IT Resource Center page at:
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(for US, Canada, Asia-Pacific, & Latin-America)
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Under the Maintenance and Support Menu (Electronic Support Center):
click on the "more..." link. Then -
To -subscribe- to future HP Security Bulletins, or
To -review- bulletins already released
click on "Support Information Digests" near the bottom of the
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Login with your user ID and password (or register for one).
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On the "Support Information Digest Main" page:
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Once in the archive the third link is to our current Security
Patch Matrix. Updated daily, this matrix categorizes security
patches by platform/OS release, and by bulletin topic.
The security patch matrix is also available via anonymous ftp:
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~ftp/export/patches/hp-ux_patch_matrix
D. To report new security vulnerabilities, send email to
[email protected]
Please encrypt any exploit information using the security-alert
PGP key, available from your local key server, or by sending a
message with a -subject- (not body) of 'get key' (no quotes) to
[email protected].
Permission is granted for copying and circulating this advisory to
Hewlett-Packard (HP) customers (or the Internet community) for the
purpose of alerting them to problems, if and only if, the advisory
is not edited or changed in any way, is attributed to HP, and
provided such reproduction and/or distribution is performed for
non-commercial purposes.
Any other use of this information is prohibited. HP is not liable
for any misuse of this information by any third party.
________________________________________________________________________
-----End of Document ID: HPSBUX0001-108--------------------------------------
------------------------------------------------------------------------
Justin Leonard Tripp [email protected]
Configurable Computing Laboratory Research Assistant CB 461 x8-7206
Electrical and Computer Engineering Department Brigham Young University
