Home / vulnerabilities MDVSA-2008-004.txt
Posted on 09 January 2008
Source : packetstormsecurity.org Link
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Mandriva Linux Security Advisory MDVSA-2008:004
http://www.mandriva.com/security/
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Package : postgresql
Date : January 9, 2008
Affected: .
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Problem Description:
Index Functions Privilege Escalation (CVE-2007-6600): as a unique
feature, PostgreSQL allows users to create indexes on the results of
user-defined functions, known as expression indexes. This provided
two vulnerabilities to privilege escalation: (1) index functions were
executed as the superuser and not the table owner during VACUUM and
ANALYZE, and (2) that SET ROLE and SET SESSION AUTHORIZATION were
permitted within index functions.
Regular Expression Denial-of-Service (CVE-2007-4772, CVE-2007-6067,
CVE-2007-4769): three separate issues in the regular expression
libraries used by PostgreSQL allowed malicious users to initiate
a denial-of-service by passing certain regular expressions in SQL
queries. First, users could create infinite loops using some specific
regular expressions. Second, certain complex regular expressions
could consume excessive amounts of memory. Third, out-of-range backref
numbers could be used to crash the backend.
DBLink Privilege Escalation (CVE-2007-6601): DBLink functions
combined with local trust or ident authentication could be used by
a malicious user to gain superuser privileges. This issue has been
fixed, and does not affect users who have not installed DBLink (an
optional module), or who are using password authentication for local
access. This same problem was addressed in the previous release cycle
(see CVE-2007-3278), but that patch failed to close all forms of
the loophole.
Updated packages fix these issues by upgrading to the latest
maintenance versions of PostgreSQL.
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References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4769
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4772
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6067
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6600
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6601
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Updated Packages:
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To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.
All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:
gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98
You can view other update advisories for Mandriva Linux at:
http://www.mandriva.com/security/advisories
If you want to report vulnerabilities, please contact
security_(at)_mandriva.com
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Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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