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November 2005

SUSE - Two Security Announcements

ID: 00989
Ref: 927/05
Date: 07 November 2005:11:17:57
Version: 1

Title: SUSE - Two Security Announcements
Abstract: 1. Security Summary Report (SUSE-SR:2005:025), 2. pwdutils, shadow (SUSE-SA:2005:064)
Vendors affected: SUSE
Operating systems affected: SUSE
Applications affected: SUSE

Title
=====

SUSE - Two Security Announcements:
1. Security Summary Report (SUSE-SR:2005:025)
2. pwdutils, shadow (SUSE-SA:2005:064)

Detail
======

Security announcement summaries:

1. SUSE Security releases weekly summary reports for the low profile
vulnerability fixes.

2. Thomas Gerisch found that the setuid 'chfn' program contained in the
pwdutils suite insufficiently checks it's arguments when changing
the GECOS field. This bug leads to a trivially exploitable local
privilege escalation that allows users to gain root access.

Security announcement content follows:

1.

- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

______________________________________________________________________________

SUSE Security Summary Report

Announcement ID: SUSE-SR:2005:025
Date: Fri, 04 Nov 2005 14:00:00 +0000
Cross-References: CVE-2005-2869, CVE-2005-2917, CVE-2005-2958
CVE-2005-2959, CVE-2005-2971, CVE-2005-2974
CVE-2005-3068, CVE-2005-3120, CVE-2005-3122
CVE-2005-3123, CVE-2005-3184, CVE-2005-3185
CVE-2005-3241, CVE-2005-3242, CVE-2005-3243
CVE-2005-3244, CVE-2005-3245, CVE-2005-3246
CVE-2005-3247, CVE-2005-3248, CVE-2005-3249
CVE-2005-3258, CVE-2005-3300, CVE-2005-3301
CVE-2005-3313, CVE-2005-3318, CVE-2005-3350
CVE-2005-3388, CVE-2005-3389, CVE-2005-3390
CVE-2005-3393, CVE-2005-3409

Content of this advisory:
1) Solved Security Vulnerabilities:
- openvpn
- lynx
- liby2util
- wget
- kchmviewer
- koffice-wordprocessing
- ethereal
2) Pending Vulnerabilities, Solutions, and Work-Arounds:
- zope
- phpMyAdmin
- libgda
- squid
- php4, php5
- gnump3d
- libungif, giflib
- sudo
- eric
3) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Solved Security Vulnerabilities

To avoid flooding mailing lists with SUSE Security Announcements for minor
issues, SUSE Security releases weekly summary reports for the low profile
vulnerability fixes. The SUSE Security Summary Reports do not list md5 sums
or download URLs like the SUSE Security Announcements that are released for
more severe vulnerabilities.

Fixed packages for the following incidents are already available on our FTP
server and via the YaST Online Update.

- openvpn
An openvpn update fixes the following security bugs:

- a malicious or compromised server could exploit a format string
bug in clients to execute arbitrary code (CVE-2005-3393).

- a server in TCP mode could be made to crash due to insufficient
checks for the error code of the accept() system call
(CVE-2005-3409).

SUSE Linux 9.3 and 10.0 are affected.

- lynx
This update fixes a buffer overflow in function HTrjis() that occurs while
processing NNTP headers. An attacker can exploit this remotely by persuading
the victim user to connect to a NNTP server which includes a malformated
article to execute arbitrary code. (CAN-2005-3120)

All SUSE LINUX based products and SLES9 are affected.

- liby2util
The previous liby2util update on SUSE Linux 9.1 was broken. Fixed
packages have been released.

- wget
Updates for SUSE Linux 9.2 that fix CAN-2005-3185 where missing
previously. Update packages are now available.

- kchmviewer
kchmviewer contained a copy of chmlib that was prone to a buffer
overflow (CVE-2005-3318).

SUSE Linux 10.0 is affected.

- koffice-wordprocessing
A buffer overflow in the RTF import filter in koffice was fixed
(CAN-2005-2971 / CESA-2005-005). It allowed remote attackers to
execute code in the koffice process by preparing a special RTF
file.

All SUSE LINUX products and SLD are affected.

- ethereal
A version upgrade to ethereal 0.10.13 fixes several security
related bugs ranging from crashes to arbitrary code execution.
(CVE-2005-3241, CVE-2005-3242, CVE-2005-3243, CVE-2005-3244,
CVE-2005-3245, CVE-2005-3246, CVE-2005-3247, CVE-2005-3248,
CVE-2005-3249, CVE-2005-3184, CVE-2005-3313)

All SUSE LINUX based products are affected.

______________________________________________________________________________

2) Pending Vulnerabilities, Solutions, and Work-Arounds

- zope
Zope honors file inclusion directives in RestructuredText objects
which potentially allowed attackers to execute arbitrary code (Zope
Hotfix 2005-10-09).

Updates are currently being QA tested.

All SUSE LINUX products >= 9.1 and SLES9 are affected.

- phpMyAdmin
We are preparing updates for the following issues:

- multiple cross-site scripting (XSS) bugs (CVE-2005-3301,
CAN-2005-2869, PMASA-2005-5).

- multiple file inclusion vulnerabilities that allowed an attacker
to include arbitrary files (CVE-2005-3300, CVE-2005-3301,
PMASA-2005-5).

All SUSE LINUX products are affected.

- libgda
libgda contains two format string bugs in logging routines. Those
bugs could potentially indirectly lead to arbitrary code execution
via applications that link against libgda and supply data to libgda
(CAN-2005-2958).

Updates are currently beeing QA tested.

All SUSE LINUX products and SLES9 are affected.

- squid
We are preparing updates for the following issues:

- A bug in the NTLM authentication could crash squid (CVE-2005-2917)

- Odd replies of FTP servers could crash squid (CVE-2005-3258)

Updates are currently being QA tested.

All SUSE LINUX based products are affected

- php4, php5
Stefan Esser discovered a cross-site scripting bug in the phpinfo()
function (CVE-2005-3388), a bug that allows an attacker to enable
register_globals (CVE-2005-3389) and a bug that allows an attacker
to overwrite the $GLOBALS array (CVE-2005-3390).

We are preparing updates for these issues.

All SUSE LINUX based products are affected.

- gnump3d
Steve Kemp discovered a cross-site scripting bug (CVE-2005-3122) and
a directory traversal bug (CVE-2005-3123) in gnump3d.

We are preparing updates for these issues.

All SUSE LINUX products are affected.

- libungif, giflib
We are preparing updates for the following issues:

- specially crafted GIF files could crash applications
(CVE-2005-2974).

- specially crafted GIF files could overwrite memory which
potentially allowed to execute arbitrary code (CVE-2005-3350).

Updates are currently being QA tested.

All SUSE LINUX based products are affected.

- sudo
The fix for CVE-2005-2959 further extends the sudo internal
environment variable blacklist to prevent interpretation of those
variables by the bash shell. In our opinion a blacklist based
approach to improve security is doomed to fail. If you use sudo to
grant limited super user access to regular users you should rather
configure sudo to clean the entire environment by setting the
options env_reset and always_set_home. We will therefore not release
security updates for the sole purpose of extending the blacklist.

- eric
Eric project files may contain python code which is run through
eval() by eric. The fix for CVE-2005-3068 does not prevent this.
A project file is some kind of Makefile, executing code in such a
development environment is a natural property. GPG signatures should
be used to validate integrity and authenticity of source releases.
We are therefore not going release security updates for eric.

______________________________________________________________________________

3) Authenticity Verification and Additional Information

- Announcement authenticity verification:

SUSE security announcements are published via mailing lists and on Web
sites. The authenticity and integrity of a SUSE security announcement is
guaranteed by a cryptographic signature in each announcement. All SUSE
security announcements are published with a valid signature.

To verify the signature of the announcement, save it as text into a file
and run the command

gpg --verify

replacing with the name of the file containing the announcement.
The output for a valid signature looks like:

gpg: Signature made using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team "

where is replaced by the date the document was signed.

If the security team's key is not contained in your key ring, you can
import it from the first installation CD. To import the key, use the
command

gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

- Package authenticity verification:

SUSE update packages are available on many mirror FTP servers all over the
world. While this service is considered valuable and important to the free
and open source software community, the authenticity and integrity of a
package needs to be verified to ensure that it has not been tampered with.

The internal RPM package signatures provide an easy way to verify the
authenticity of an RPM package. Use the command

rpm -v --checksig

to verify the signature of the package, replacing with the
filename of the RPM package downloaded. The package is unmodified if it
contains a valid signature from build@suse.de with the key ID 9C800ACA.

This key is automatically imported into the RPM database (on RPMv4-based
distributions) and the gpg key ring of 'root' during installation. You can
also find it on the first installation CD and included at the end of this
announcement.

- SUSE runs two security mailing lists to which any interested party may
subscribe:

suse-security@suse.com
- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to

.

suse-security-announce@suse.com
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an e-mail to

.

For general information or the frequently asked questions (FAQ)
send mail to or

.

=====================================================================
SUSE's security contact is or .
The 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, the
clear text signature should show proof of the authenticity of the text.

SUSE Linux Products GmbH provides 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
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key

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2.

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Hash: SHA1

______________________________________________________________________________

SUSE Security Announcement

Package: pwdutils, shadow
Announcement ID: SUSE-SA:2005:064
Date: Fri, 04 Nov 2005 14:00:00 +0000
Affected Products: SUSE LINUX 10.0
SUSE LINUX 9.3
SUSE LINUX 9.2
SUSE LINUX 9.1
SuSE Linux 9.0
SuSE Linux Desktop 1.0
SuSE Linux Enterprise Server 8
SUSE SLES 9
UnitedLinux 1.0
Vulnerability Type: local privilege escalation
Severity (1-10): 7
SUSE Default Package: yes
Cross-References: -

Content of This Advisory:
1) Security Vulnerability Resolved:
pwdutils privilege escalation
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
- See SUSE Security Summary Report
6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

Thomas Gerisch found that the setuid 'chfn' program contained in the
pwdutils suite insufficiently checks it's arguments when changing
the GECOS field. This bug leads to a trivially exploitable local
privilege escalation that allows users to gain root access.

We like to thank Thomas Gerisch for pointing out the problem.

2) Solution or Work-Around

Removing the setuid bit from /usr/bin/chfn renders chfn useless but
also prevents successful exploitation. Note that this workaround
only lasts until the next run of SuSEconfig which will restore the
setuid bit if you are on permissions level 'easy' or 'secure'.

3) Special Instructions and Notes

None

4) Package Location and Checksums

The preferred method for installing security updates is to use the YaST
Online Update (YOU) tool. YOU detects which updates are required and
automatically performs the necessary steps to verify and install them.
Alternatively, download the update packages for your distribution manually
and verify their integrity by the methods listed in Section 6 of this
announcement. Then install the packages using the command

rpm -Fhv

to apply the update, replacing with the filename of the
downloaded RPM package.

x86 Platform:

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/pwdutils-3.0.4-4.2.i586.rpm
385e9ef4f03e67ddb50a6a21d5b9f0e9

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/pwdutils-2.6.96-4.2.i586.rpm
4705772232599de3a2d9dc83c922ee47

SUSE LINUX 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/pwdutils-2.6.90-6.2.i586.rpm
aae77d1eab9d617be89ab993f9f8a47d

SUSE LINUX 9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/pwdutils-2.6.4-2.18.3.i586.rpm
5e957e0370ac82874979e0c02187517e

SuSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/shadow-4.0.3-267.i586.rpm
8cf127c4d2e74f17cf0ff058f4feaf00

Power PC Platform:

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/pwdutils-3.0.4-4.2.ppc.rpm
533274d92b8375bc51b6a3684c1cf506

x86-64 Platform:

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/pwdutils-3.0.4-4.2.x86_64.rpm
cc54040195f24925474d1896c45ccb30

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/pwdutils-2.6.96-4.2.x86_64.rpm
785543d9276bd5de611ce0e82bc3c066

SUSE LINUX 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/pwdutils-2.6.90-6.2.x86_64.rpm
82b384b4d65189c2af84677d7fc02dba

SUSE LINUX 9.1:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/pwdutils-2.6.4-2.18.3.x86_64.rpm
f5d860c203d8dc5c6b85318229fe68d8

SuSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/shadow-4.0.3-267.x86_64.rpm
384136f520ebf09d3be779291da92c8d

Sources:

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/pwdutils-3.0.4-4.2.src.rpm
f4b6aedde6cf93e1fe5b47bda874e72a

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/pwdutils-2.6.96-4.2.src.rpm
cb0d28c88ecf013418234ed39ff87e85

SUSE LINUX 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/pwdutils-2.6.90-6.2.src.rpm
e8854e2433279f4a2650d354a07f3605

SUSE LINUX 9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/pwdutils-2.6.4-2.18.3.src.rpm
81453f140a633eeb0b0a841b857e49a5
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/pwdutils-2.6.4-2.18.3.src.rpm
7f5d161dae57bf1fb64cd39269b5255c

SuSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/shadow-4.0.3-267.src.rpm
6cc9c84bdea5f04c290c55c942327bb0
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/shadow-4.0.3-267.src.rpm
d463b528a727655b392230302d998976

Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web:

http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/185153682667ec6862eeea0f4622dde5.html
http://portal.suse.com/psdb/185153682667ec6862eeea0f4622dde5.html
http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/53225e252af46c1f6a71fe03f1d76317.html
http://portal.suse.com/psdb/53225e252af46c1f6a71fe03f1d76317.html

______________________________________________________________________________

5) Pending Vulnerabilities, Solutions, and Work-Arounds:

- See SUSE Security Summary Report

______________________________________________________________________________

6) Authenticity Verification and Additional Information

- Announcement authenticity verification:

SUSE security announcements are published via mailing lists and on Web
sites. The authenticity and integrity of a SUSE security announcement is
guaranteed by a cryptographic signature in each announcement. All SUSE
security announcements are published with a valid signature.

To verify the signature of the announcement, save it as text into a file
and run the command

gpg --verify

replacing with the name of the file where you saved the
announcement. The output for a valid signature looks like:

gpg: Signature made using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team "

where is replaced by the date the document was signed.

If the security team's key is not contained in your key ring, you can
import it from the first installation CD. To import the key, use the
command

gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

- Package authenticity verification:

SUSE update packages are available on many mirror FTP servers all over the
world. While this service is considered valuable and important to the free
and open source software community, the authenticity and the integrity of
a package needs to be verified to ensure that it has not been tampered
with.

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) Using the internal gpg signatures of the rpm package
2) MD5 checksums as provided in this announcement

1) The internal rpm package signatures provide an easy way to verify the
authenticity of an RPM package. Use the command

rpm -v --checksig

to verify the signature of the package, replacing with the
filename of the RPM package downloaded. The package is unmodified if it
contains a valid signature from build@suse.de with the key ID 9C800ACA.

This key is automatically imported into the RPM database (on
RPMv4-based distributions) and the gpg key ring of 'root' during
installation. You can also find it on the first installation CD and at
the end of this announcement.

2) If you need an alternative means of verification, use the md5sum
command to verify the authenticity of the packages. Execute the command

md5sum

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
SUSE security announcement. Because the announcement containing the
checksums is cryptographically signed (by security@suse.de), the
checksums show proof of the authenticity of the package if the
signature of the announcement is valid. Note that the md5 sums
published in the SUSE Security Announcements are valid for the
respective packages only. Newer versions of these packages cannot be
verified.

- SUSE runs two security mailing lists to which any interested party may
subscribe:

suse-security@suse.com
- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to

.

suse-security-announce@suse.com
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an e-mail to

.

For general information or the frequently asked questions (FAQ),
send mail to or