Synopsis

Low: gdm security and bug fix update

Type/Severity

Security Advisory: Low

Topic

An updated gdm package that fixes a security issue and a bug is now available.

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

Description

Gdm (the GNOME Display Manager) is a highly configurable reimplementation
of xdm, the X Display Manager. Gdm allows you to log into your system with
the X Window System running and supports running several different X
sessions on your local machine at the same time.

Marcus Meissner discovered a race condition issue in the way Gdm modifies
the permissions on the .ICEauthority file. A local attacker could exploit
this flaw to gain privileges. Due to the nature of the flaw, however, a
successful exploitation was unlikely. (CVE-2006-1057)

This erratum also includes a bug fix to correct the pam configuration for
the audit system.

All users of gdm should upgrade to this updated package, which contains
backported patches to resolve these issues.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

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 Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 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 Power, big endian 4 ppc

Fixes

• BZ - 159338 - gdm update for new audit system
• BZ - 188302 - CVE-2006-1057 GDM file permissions race condition

CVEs

• CVE-2006-1057

References

• http://www.redhat.com/security/updates/classification/#low

Red Hat Enterprise Linux Server 4

SRPM
gdm-2.6.0.5-7.rhel4.15.src.rpm	SHA-256: b41050b49ade77178a0ec7817cc901d79763222472f53444373c7ce96ba7cb51
x86_64
gdm-2.6.0.5-7.rhel4.15.x86_64.rpm	SHA-256: b0b3853d4a7a6c234b1cb7abb28662a276368aae02fceced1caeb8cbb403a2c0
gdm-2.6.0.5-7.rhel4.15.x86_64.rpm	SHA-256: b0b3853d4a7a6c234b1cb7abb28662a276368aae02fceced1caeb8cbb403a2c0
ia64
gdm-2.6.0.5-7.rhel4.15.ia64.rpm	SHA-256: ee533348035367e186367695a86189981ea8928448b0de170f4664766cbdf12e
gdm-2.6.0.5-7.rhel4.15.ia64.rpm	SHA-256: ee533348035367e186367695a86189981ea8928448b0de170f4664766cbdf12e
i386
gdm-2.6.0.5-7.rhel4.15.i386.rpm	SHA-256: 3d7beb66f46671c9b55d96ee7fe5148efe8457c8792259c4bf80eaed99b29926
gdm-2.6.0.5-7.rhel4.15.i386.rpm	SHA-256: 3d7beb66f46671c9b55d96ee7fe5148efe8457c8792259c4bf80eaed99b29926

Red Hat Enterprise Linux Workstation 4

SRPM
gdm-2.6.0.5-7.rhel4.15.src.rpm	SHA-256: b41050b49ade77178a0ec7817cc901d79763222472f53444373c7ce96ba7cb51
x86_64
gdm-2.6.0.5-7.rhel4.15.x86_64.rpm	SHA-256: b0b3853d4a7a6c234b1cb7abb28662a276368aae02fceced1caeb8cbb403a2c0
ia64
gdm-2.6.0.5-7.rhel4.15.ia64.rpm	SHA-256: ee533348035367e186367695a86189981ea8928448b0de170f4664766cbdf12e
i386
gdm-2.6.0.5-7.rhel4.15.i386.rpm	SHA-256: 3d7beb66f46671c9b55d96ee7fe5148efe8457c8792259c4bf80eaed99b29926

Red Hat Enterprise Linux Desktop 4

SRPM
gdm-2.6.0.5-7.rhel4.15.src.rpm	SHA-256: b41050b49ade77178a0ec7817cc901d79763222472f53444373c7ce96ba7cb51
x86_64
gdm-2.6.0.5-7.rhel4.15.x86_64.rpm	SHA-256: b0b3853d4a7a6c234b1cb7abb28662a276368aae02fceced1caeb8cbb403a2c0
i386
gdm-2.6.0.5-7.rhel4.15.i386.rpm	SHA-256: 3d7beb66f46671c9b55d96ee7fe5148efe8457c8792259c4bf80eaed99b29926

Red Hat Enterprise Linux for IBM z Systems 4

SRPM
gdm-2.6.0.5-7.rhel4.15.src.rpm	SHA-256: b41050b49ade77178a0ec7817cc901d79763222472f53444373c7ce96ba7cb51
s390x
gdm-2.6.0.5-7.rhel4.15.s390x.rpm	SHA-256: 5852863c7803f23959bd09ec630c26511a5dbf0cbe87da2fff0c787a3fdf6ec0
s390
gdm-2.6.0.5-7.rhel4.15.s390.rpm	SHA-256: 2b99737e54acdf81b96518b2609f840eb2ec2ede0203310b6900793fef4a9505

Red Hat Enterprise Linux for Power, big endian 4

SRPM
gdm-2.6.0.5-7.rhel4.15.src.rpm	SHA-256: b41050b49ade77178a0ec7817cc901d79763222472f53444373c7ce96ba7cb51
ppc
gdm-2.6.0.5-7.rhel4.15.ppc.rpm	SHA-256: 58f8c2cab0725b332d3c76e7c78da186c17b68edbad96ef7742c68cdc074b0b6