SUSE Security Announcement: xshared, XFree86-libs, xorg-x11-libs (SUSE-SA:2004:041)
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______________________________________________________________________________
SUSE Security Announcement
Package: xshared, XFree86-libs, xorg-x11-libs
Announcement-ID: SUSE-SA:2004:041
Date: Wednesday, Nov 17th 2004 15:00 MET
Affected products: 8.1, 8.2, 9.0, 9.1, 9.2
SUSE Linux Desktop 1.0
SUSE Linux Enterprise Server 8, 9
Novell Linux Desktop 1.0
Vulnerability Type: remote system compromise
Severity (1-10): 8
SUSE default package: yes
Cross References: none
Content of this advisory:
1) security vulnerability resolved:
- several integer overflows
- out-of-bounds memory access
- shell command execution
- path traversal
- endless loops
- memory leaks
problem description
2) solution/workaround
3) special instructions and notes
4) package location and checksums
5) pending vulnerabilities, solutions, workarounds:
- ImageMagick
- clamav
- perl-MIME-Tools, perl-Archive-ZIP
- apache / mod_include
- apache2 / mod_SSL
6) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion
The XPM library which is part of the XFree86/XOrg project is used by
several GUI applications to process XPM image files.
A source code review done by Thomas Biege of the SuSE Security-Team
revealed several different kinds of bugs.
The bug types are:
- integer overflows
- out-of-bounds memory access
- shell command execution
- path traversal
- endless loops
By providing a special image these bugs can be exploited by remote and/or
local attackers to gain access to the system or to escalate their local
privileges.
2) solution/workaround
No workaround exists to protect against these bugs.
3) special instructions and notes
Please restart the X server or switch to runlevel 3 and back to 5 to make
sure every GUI application is restarted and uses the new library.
4) package location and checksums
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 for installation from the maintenance web.
Smalltalk is the only package using libxpm statically. It will be
available via YOU too.
x86 Platform:
SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/xorg-x11-libs-6.8.1-15.3.i586.rpm
395edf444f05b448aa7c7e70455333ce
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/xorg-x11-libs-6.8.1-15.3.i586.patch.rpm
8d215ce255838120c70ba77ad944a84f
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/xorg-x11-6.8.1-15.3.src.rpm
3889aee5895035c57c716f370f5e414a
SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/XFree86-libs-4.3.99.902-43.35.3.i586.rpm
89431783cd8261a970d6ec5484dd09e6
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/XFree86-libs-4.3.99.902-43.35.3.i586.patch.rpm
8ea579d10465143a2334be812f23561e
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/XFree86-4.3.99.902-43.35.3.src.rpm
a37eaa7e7b99c5c3e61439f2a4b00b2d
SUSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/XFree86-libs-4.3.0.1-57.i586.rpm
a12b2e861f114868fd70997f72536c8b
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/XFree86-libs-4.3.0.1-57.i586.patch.rpm
c6ea49a796b316aa68dacc51ffd8eb8d
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/XFree86-4.3.0.1-57.src.rpm
f53026511a470b875b0f9a63c52128d3
SUSE Linux 8.2:
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/XFree86-libs-4.3.0-132.i586.rpm
b918f14df14961cf89528a930f49d7c4
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/XFree86-libs-4.3.0-132.i586.patch.rpm
9c9c268bb248f1bcf2ef899ced2d5aa4
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/XFree86-4.3.0-132.src.rpm
9a7846ddf22d58f9f64704b3a2451640
SUSE Linux 8.1:
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/xshared-4.2.0-269.i586.rpm
d4549acb039d8bf317bc6052598764c9
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/xshared-4.2.0-269.i586.patch.rpm
fcfc17915fdddb48ea84e4d528752edc
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/xf86-4.2.0-269.src.rpm
3e1d6cf799d0a8e10e2597458264812e
x86-64 Platform:
SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.2/rpm/x86_64/xorg-x11-libs-32bit-9.2-200411100529.x86_64.rpm
e1a271567b2c784aedf3b10f60bbf8a1
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.2/rpm/x86_64/xorg-x11-libs-32bit-9.2-200411100529.x86_64.patch.rpm
fe95d10e1287ebbe56ba8d7a07954431
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.2/rpm/src/baselibs-32bit-9.2-200411100529.src.rpm
da697a970a5672a96016fff405f72692
SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/XFree86-libs-4.3.99.902-43.35.3.x86_64.rpm
37b2d73337bd0d70dcc092c0e15a0911
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/XFree86-libs-4.3.99.902-43.35.3.x86_64.patch.rpm
d72e54995bd6468cf1ea78da81546a69
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/XFree86-4.3.99.902-43.35.3.src.rpm
0158b2653157f518f8dcf030927c2107
SUSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/XFree86-libs-4.3.0.1-57.x86_64.rpm
06a4fd1bd6eeb43fd82e18b9a255ff78
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/XFree86-libs-4.3.0.1-57.x86_64.patch.rpm
da96d1c51020a7de70195458b197fa3b
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/XFree86-4.3.0.1-57.src.rpm
f369153e40af338af2fd67957db09cff
______________________________________________________________________________
5) Pending vulnerabilities in SUSE Distributions and Workarounds:
- ImageMagick
This update fixes an additional problem in the EXIF handling of
ImageMagick, which could lead to a buffer overflow. This could enable
remote attackers feeding handcrafted images to execute code as the
user handling the image.
New packages are available.
- clamav
The clamav version shipped with SUSE Linux is too old for the new
data files. The version has been upgraded to 0.80.
- perl-Mime-Tools / perl-Archive-ZIP
Problems in the perl-MIME-Tools and perl-Archive-ZIP packages have
been found which could allow virii to pass virus scanners using those
packages (like for instance clamav). Fixed packages are in testing
and will be released soon.
- Apache 1.3 / mod_include
A potential buffer overflow and a argument sanitization problem
were found in the mod_include Apache 1.3 module. These issues
are tracked as CAN-2004-0940 and CAN-2004-0492 by Mitre CVE.
Fixed packages are in testing and will be released soon.
- Apache 2 / mod_SSL
SSL Ciphersuite bypass problems were identified and fixed by the
Apache team in Apache 2. This is tracked under the Mitre CVE ID
CAN-2004-0885. Fixed packages are in testing and will be released
soon.
______________________________________________________________________________
6) 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 security@xxxxxxx),
the checksums show proof of the authenticity of the package.
We recommend against subscribing to security lists that cause the
e-mail 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
file name of the rpm package that you have downloaded. Of course,
package authenticity verification can only target an uninstalled 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 "build@xxxxxxx" 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:
suse-security@xxxxxxxx
- general/linux/SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an email to
<suse-security-subscribe@xxxxxxxx>.
suse-security-announce@xxxxxxxx
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an email to
<suse-security-announce-subscribe@xxxxxxxx>.
For general information or the frequently asked questions (faq)
send mail to:
<suse-security-info@xxxxxxxx> or
<suse-security-faq@xxxxxxxx> respectively.
=====================================================================
SUSE's security contact is <security@xxxxxxxx> or <security@xxxxxxx>.
The <security@xxxxxxx> 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 <security@xxxxxxx>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@xxxxxxx>
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