Date: Wed, 09 Jun 2004 16:47:40 +0200
From: (Thomas Biege) <[email protected]>
To: [email protected]Subject: SUSE Security Announcement: squid (SuSE-SA:2004:016)
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______________________________________________________________________________
SUSE Security Announcement
Package: squid
Announcement-ID: SuSE-SA:2004:016
Date: Wednesday, Jun 9th 2004 16:30 MEST
Affected products: 8.2, 9.0, 9.1
Vulnerability Type: remote system compromise
Severity (1-10): 5
SUSE default package: no
Cross References: CAN-2004-0541
Content of this advisory:
1) security vulnerability resolved:
- buffer overflow
problem description, discussion, solution and upgrade information
2) pending vulnerabilities, solutions, workarounds:
- icecast
- sitecopy
- cadaver
- tla
- OpenOffice_org
- tripwire
- postgresql
- lha
3) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion, solution, upgrade information
Squid is a feature-rich web-proxy with support for various web-related
protocols.
The NTLM authentication helper application of Squid is vulnerable to
a buffer overflow that can be exploited remotely by using a long
password to execute arbitrary code.
NTLM authentication is enabled by default in the Squid package that
is shipped by SUSE LINUX.
There is no workaround known other then turning off the NTLM
authentication.
Please download the update package for your distribution and verify its
integrity by the methods listed in section 3) of this announcement.
Then, install the package using the command "rpm -Fhv file.rpm" to apply
the update.
Our maintenance customers are being notified individually. The packages
are being offered to install from the maintenance web.
Intel i386 Platform:
SuSE-9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/squid-2.5.STABLE5-42.9.i586.rpm
ea3da461f226cc881562b06224a8370e
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/squid-2.5.STABLE5-42.9.i586.patch.rpm
f85bd7c071695d0d9c304969c5a35a23
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/squid-2.5.STABLE5-42.9.src.rpm
610caf4de1d7333af0f8613767d40bb0
SuSE-9.0:
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/squid-2.5.STABLE3-110.i586.rpm
fc31dd7379b249d8f9a07d0f4464996d
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/squid-2.5.STABLE3-110.i586.patch.rpm
06961779c39bca33ee2d619773f47f39
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/squid-2.5.STABLE3-110.src.rpm
90c171552d03e2efb731d25a4ffbf553
SuSE-8.2:
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/squid-2.5.STABLE1-98.i586.rpm
d35da0a2719ca8de24c299ef9a8dbe3f
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/squid-2.5.STABLE1-98.i586.patch.rpm
0aa98cf95a23a0ea35a2e6657717243e
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/squid-2.5.STABLE1-98.src.rpm
4fdd84cebf8dbdc7334e48a9f8369efc
SuSE-8.0:
ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/squid-2.4.STABLE6-9.i386.rpm
fa4780901f96712ea22eef28bdf53700
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/squid-2.4.STABLE6-9.i386.patch.rpm
917c26da9c444085d045b708548eae3e
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/squid-2.4.STABLE6-9.src.rpm
dc96baf5541829ee6e615861d17146aa
Opteron x86_64 Platform:
SuSE-9.1:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/squid-2.5.STABLE5-42.9.x86_64.rpm
868c4121e1622f6ac91a8eaac414eabe
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/squid-2.5.STABLE5-42.9.x86_64.patch.rpm
0cbc28a5262dfe4eb72ee3fbbb5b4657
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/squid-2.5.STABLE5-42.9.src.rpm
20ab0af37af2139e1de8f1f4edfcc2c6
SuSE-9.0:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/squid-2.5.STABLE3-110.x86_64.rpm
616f32f8196ed53a4f5f163f33d2a838
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/squid-2.5.STABLE3-110.x86_64.patch.rpm
72ca1d31e833be4d9e9c150349d2bbbc
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/squid-2.5.STABLE3-110.src.rpm
632bd7bdbe116eff14213b9f6245cd0a
______________________________________________________________________________
2) Pending vulnerabilities in SUSE Distributions and Workarounds:
- icecast
The icecast service is vulnerable to a remote denial-of-service
attack. Update packages will be available soon.
- sitecopy
The sitecopy package includes a vulnerable version of the
neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be
available soon.
- cadaver
The cadaver package includes a vulnerable version of the
neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be
available soon.
- tla
The tla package includes a vulnerable version of the
neon library (CAN-2004-0179, CAN-2004-0398). Update packages are
available on our FTP servers.
- OpenOffice_org
The OpenOffice_org package includes a vulnerable version
of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages
will be available soon.
- tripwire
A format string bug in tripwire can be exploited locally
to gain root permissions. Update packages will be available soon.
- postgresql
A buffer overflow in psqlODBC could be exploited to crash the
application using it. E.g. a PHP script that uses ODBC to access a
PostgreSQL database can be utilized to crash the surrounding Apache
web-server. Other parts of PostgreSQL are not affected.
Update packages will be available soon.
- lha
Minor security fix for a buffer overflow while handling command
line options. This buffer overflow could be exploited in conjunction
with other mechanisms to gain higher privileges or access the system
remotely.
______________________________________________________________________________
3) standard appendix: authenticity verification, additional information
- Package authenticity verification:
SUSE update packages are available on many mirror ftp servers all over
the world. While this service is being considered valuable and important
to the free and open source software community, many users wish to be
sure about the origin of the package and its content before installing
the package. There are two verification methods that can be used
independently from each other to prove the authenticity of a downloaded
file or rpm package:
1) md5sums as provided in the (cryptographically signed) announcement.
2) using the internal gpg signatures of the rpm package.
1) execute the command
md5sum <name-of-the-file.rpm>
after you downloaded the file from a SUSE ftp server or its mirrors.
Then, compare the resulting md5sum with the one that is listed in the
announcement. Since the announcement containing the checksums is
cryptographically signed (usually using the key [email protected]),
the checksums show proof of the authenticity of the package.
We disrecommend to subscribe to security lists which cause the
email message containing the announcement to be modified so that
the signature does not match after transport through the mailing
list software.
Downsides: You must be able to verify the authenticity of the
announcement in the first place. If RPM packages are being rebuilt
and a new version of a package is published on the ftp server, all
md5 sums for the files are useless.
2) rpm package signatures provide an easy way to verify the authenticity
of an rpm package. Use the command
rpm -v --checksig <file.rpm>
to verify the signature of the package, where <file.rpm> is the
filename of the rpm package that you have downloaded. Of course,
package authenticity verification can only target an un-installed rpm
package file.
Prerequisites:
a) gpg is installed
b) The package is signed using a certain key. The public part of this
key must be installed by the gpg program in the directory
~/.gnupg/ under the user's home directory who performs the
signature verification (usually root). You can import the key
that is used by SUSE in rpm packages for SUSE Linux by saving
this announcement to a file ("announcement.txt") and
running the command (do "su -" to be root):
gpg --batch; gpg < announcement.txt | gpg --import
SUSE Linux distributions version 7.1 and thereafter install the
key "[email protected]" upon installation or upgrade, provided that
the package gpg is installed. The file containing the public key
is placed at the top-level directory of the first CD (pubring.gpg)
and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .
- SUSE runs two security mailing lists to which any interested party may
subscribe:
[email protected]
- general/linux/SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an email to
<[email protected]>.
[email protected]
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an email to
<[email protected]>.
For general information or the frequently asked questions (faq)
send mail to:
<[email protected]> or
<[email protected]> respectively.
SUSE's security contact is <[email protected]> or <[email protected]>.
The <[email protected]> public key is listed below.
______________________________________________________________________________
The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way. In particular,
it is desired that the clear-text signature shows proof of the
authenticity of the text.
SUSE Linux AG makes no warranties of any kind whatsoever with respect
to the information contained in this security advisory.
Type Bits/KeyID Date User ID
pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <[email protected]>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <[email protected]>
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