A new security update has been released for Gentoo Linux - PostgreSQL: Multiple vulnerabilities. Here the announcement:

Gentoo Linux Security Advisory GLSA 200801-15
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http://security.gentoo.org/
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Severity: High
Title: PostgreSQL: Multiple vulnerabilities
Date: January 29, 2008
Bugs: #204760
ID: 200801-15

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Synopsis
========

PostgreSQL contains multiple vulnerabilities that could result in
privilege escalation or a Denial of Service.

Background
==========

PostgreSQL is an open source object-relational database management
system.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-db/postgresql < 8.0.15 >= 8.0.15
*>= 7.4.19
*>= 7.3.21

Description
===========

If using the "expression indexes" feature, PostgreSQL executes index
functions as the superuser during VACUUM and ANALYZE instead of the
table owner, and allows SET ROLE and SET SESSION AUTHORIZATION in the
index functions (CVE-2007-6600). Additionally, several errors involving
regular expressions were found (CVE-2007-4769, CVE-2007-4772,
CVE-2007-6067). Eventually, a privilege escalation vulnerability via
unspecified vectors in the DBLink module was reported (CVE-2007-6601).
This vulnerability is exploitable when local trust or ident
authentication is used, and is due to an incomplete fix of
CVE-2007-3278.

Impact
======

A remote authenticated attacker could send specially crafted queries
containing complex regular expressions to the server that could result
in a Denial of Service by a server crash (CVE-2007-4769), an infinite
loop (CVE-2007-4772) or a memory exhaustion (CVE-2007-6067). The two
other vulnerabilities can be exploited to gain additional privileges.

Workaround
==========

There is no known workaround for all these issues at this time.

Resolution
==========

All PostgreSQL users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "dev-db/postgresql"

References
==========

[ 1 ] CVE-2007-3278
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3278
[ 2 ] CVE-2007-4769
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4769
[ 3 ] CVE-2007-4772
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4772
[ 4 ] CVE-2007-6067
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6067
[ 5 ] CVE-2007-6600
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6600
[ 6 ] CVE-2007-6601
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6601

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200801-15.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2008 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5