Topic

Updated mod_auth_pgsql packages that fix format string security issues are
now available for Red Hat Enterprise Linux 3 and 4.

This update has been rated as having critical security impact by the Red
Hat Security Response Team.

Description

The mod_auth_pgsql package is an httpd module that allows user
authentication against information stored in a PostgreSQL database.

Several format string flaws were found in the way mod_auth_pgsql logs
information. It may be possible for a remote attacker to execute arbitrary
code as the 'apache' user if mod_auth_pgsql is used for user
authentication. The Common Vulnerabilities and Exposures project assigned
the name CVE-2005-3656 to this issue.

Please note that this issue only affects servers which have mod_auth_pgsql
installed and configured to perform user authentication against a
PostgreSQL database.

All users of mod_auth_pgsql should upgrade to these updated packages, which
contain a backported patch to resolve this issue.

This issue does not affect the mod_auth_pgsql package supplied with Red Hat
Enterprise Linux 2.1.

Red Hat would like to thank iDefense for reporting this issue.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via Red Hat Network. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Affected Products

• Red Hat Enterprise Linux Server 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 i386
• Red Hat Enterprise Linux Server 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 i386
• Red Hat Enterprise Linux Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• Red Hat Enterprise Linux for IBM z Systems 4 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390
• Red Hat Enterprise Linux for IBM z Systems 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

• BZ - 177042 - CVE-2005-3656 mod_auth_pgsql format string issue

CVEs

• CVE-2005-3656

References

(none)