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SUSE Security Summary Report

Announcement ID: SUSE-SR:2007:018 Date: Fri, 31 Aug 2007 15:00:00 +0000 Cross-References: CVE-2007-2953, CVE-2007-2956, CVE-2007-4131 CVE-2007-4135, CVE-2007-4476, CVE-2007-4510 CVE-2007-4560

Content of this advisory: 1) Solved Security Vulnerabilities: - clamav 0.91.2 release - RealPlayer 10.0.9 - pfstools RGBE handling buffer overflow - vim/gvim format string problem in helptags - tar/star directory traversal problem - nfsidmap name - uid translation flaw 2) Pending Vulnerabilities, Solutions, and Work-Arounds: - next kernel update 3) Authenticity Verification and Additional Information

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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.

- clamav 0.91.2 release

ClamAV was updated to 0.91.2 to fix various bugs like NULL pointer dereferences and uninitialized variables. (CVE-2007-4560, CVE-2007-4510)

All SUSE Linux based products containing clamav were affected.

- RealPlayer 10.0.9

The media player RealPlayer was updated to version 10.0.9.

There was no information provided by Real on which vulnerabilities were fixed, but it is likely some were. We recommend installing this update.

SUSE Linux 10.0, 10.1, openSUSE 10.2 and SUSE Linux Enterprise Desktop 10 and Novell Linux Desktop 9 are affected by this problem.

- pfstools RGBE handling buffer overflow

A buffer overflow when processing RGBE file could potentially allow attackers to execute arbitrary code by tricking the victim into running 'pfsinrgbe' on a specially crafted file (CVE-2007-2956).

Only openSUSE 10.2 is affected by this problem and was fixed.

- vim/gvim format string problem in helptags

Vim was updated to address a format-string bug in "helptags".

This bug can be exploited to execute code with the privileges of the user running Vim. (CVE-2007-2953)

- tar/star directory traversal problem and 1 byte overflow

A directory traversal bug was fixed in tar and star, which could allow unpacked tar archives to get unpacked outside of the current directory and e.g. overwrite system files. (CVE-2007-4131)

This update also fixes a bug in function safer_name_suffix() of tar which leads to a crashing stack. Exploitability is unknown. (CVE-2007-4476)

These problem was fixed in all SUSE Linux based distributions.

- nfsidmap name - uid translation flaw

The NFSv4 ID mapper had a flaw in the name -> uid translation which caused flaws in NFSv4 name lookups. (CVE-2007-4135)

This problem was fixed for SUSE Linux Enterprise 10. ______________________________________________________________________________

2) Pending Vulnerabilities, Solutions, and Work-Arounds

- Next kernel update

A SLE 10 kernel update will be released in the next weeks to catch up on post-Service Pack 1 fixes and current security fixes.

A SUSE Linux 10.1 kernel update will be released with the same code base. ______________________________________________________________________________

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 <file>

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

gpg: Signature made <DATE> using RSA key ID 3D25D3D9 gpg: Good signature from "SuSE Security Team security@suse.de"

where <DATE> 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 <file.rpm>

to verify the signature of the package, replacing <file.rpm> 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:

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

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

===================================================================== SUSE's security contact is security@suse.com or security@suse.de. The security@suse.de 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 security@suse.de pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key build@suse.de

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