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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.0350 Moderate: gdm security update 29 March 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: gdm Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Impact/Access: Increased Privileges -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2011-0727 Reference: ESB-2011.0345 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2011-0395.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: gdm security update Advisory ID: RHSA-2011:0395-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0395.html Issue date: 2011-03-28 CVE Names: CVE-2011-0727 ===================================================================== 1. Summary: Updated gdm packages that fix one security issue are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 3. Description: The GNOME Display Manager (GDM) provides the graphical login screen, shown shortly after boot up, log out, and when user-switching. A race condition flaw was found in the way GDM handled the cache directories used to store users' dmrc and face icon files. A local attacker could use this flaw to trick GDM into changing the ownership of an arbitrary file via a symbolic link attack, allowing them to escalate their privileges. (CVE-2011-0727) Red Hat would like to thank Sebastian Krahmer of the SuSE Security Team for reporting this issue. All users should upgrade to these updated packages, which contain a backported patch to correct this issue. GDM must be restarted for this update to take effect. Rebooting achieves this, but changing the runlevel from 5 to 3 and back to 5 also restarts GDM. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 688323 - CVE-2011-0727 gdm: privilege escalation vulnerability 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/gdm-2.30.4-21.el6_0.1.src.rpm i386: gdm-2.30.4-21.el6_0.1.i686.rpm gdm-debuginfo-2.30.4-21.el6_0.1.i686.rpm gdm-libs-2.30.4-21.el6_0.1.i686.rpm gdm-plugin-fingerprint-2.30.4-21.el6_0.1.i686.rpm gdm-plugin-smartcard-2.30.4-21.el6_0.1.i686.rpm gdm-user-switch-applet-2.30.4-21.el6_0.1.i686.rpm x86_64: gdm-2.30.4-21.el6_0.1.x86_64.rpm gdm-debuginfo-2.30.4-21.el6_0.1.i686.rpm gdm-debuginfo-2.30.4-21.el6_0.1.x86_64.rpm gdm-libs-2.30.4-21.el6_0.1.i686.rpm gdm-libs-2.30.4-21.el6_0.1.x86_64.rpm gdm-plugin-fingerprint-2.30.4-21.el6_0.1.x86_64.rpm gdm-plugin-smartcard-2.30.4-21.el6_0.1.x86_64.rpm gdm-user-switch-applet-2.30.4-21.el6_0.1.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/gdm-2.30.4-21.el6_0.1.src.rpm x86_64: gdm-2.30.4-21.el6_0.1.x86_64.rpm gdm-debuginfo-2.30.4-21.el6_0.1.i686.rpm gdm-debuginfo-2.30.4-21.el6_0.1.x86_64.rpm gdm-libs-2.30.4-21.el6_0.1.i686.rpm gdm-libs-2.30.4-21.el6_0.1.x86_64.rpm gdm-plugin-fingerprint-2.30.4-21.el6_0.1.x86_64.rpm gdm-plugin-smartcard-2.30.4-21.el6_0.1.x86_64.rpm gdm-user-switch-applet-2.30.4-21.el6_0.1.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/gdm-2.30.4-21.el6_0.1.src.rpm i386: gdm-2.30.4-21.el6_0.1.i686.rpm gdm-debuginfo-2.30.4-21.el6_0.1.i686.rpm gdm-libs-2.30.4-21.el6_0.1.i686.rpm gdm-plugin-fingerprint-2.30.4-21.el6_0.1.i686.rpm gdm-plugin-smartcard-2.30.4-21.el6_0.1.i686.rpm gdm-user-switch-applet-2.30.4-21.el6_0.1.i686.rpm ppc64: gdm-2.30.4-21.el6_0.1.ppc64.rpm gdm-debuginfo-2.30.4-21.el6_0.1.ppc.rpm gdm-debuginfo-2.30.4-21.el6_0.1.ppc64.rpm gdm-libs-2.30.4-21.el6_0.1.ppc.rpm gdm-libs-2.30.4-21.el6_0.1.ppc64.rpm gdm-plugin-fingerprint-2.30.4-21.el6_0.1.ppc64.rpm gdm-plugin-smartcard-2.30.4-21.el6_0.1.ppc64.rpm gdm-user-switch-applet-2.30.4-21.el6_0.1.ppc64.rpm s390x: gdm-2.30.4-21.el6_0.1.s390x.rpm gdm-debuginfo-2.30.4-21.el6_0.1.s390.rpm gdm-debuginfo-2.30.4-21.el6_0.1.s390x.rpm gdm-libs-2.30.4-21.el6_0.1.s390.rpm gdm-libs-2.30.4-21.el6_0.1.s390x.rpm gdm-plugin-fingerprint-2.30.4-21.el6_0.1.s390x.rpm gdm-plugin-smartcard-2.30.4-21.el6_0.1.s390x.rpm gdm-user-switch-applet-2.30.4-21.el6_0.1.s390x.rpm x86_64: gdm-2.30.4-21.el6_0.1.x86_64.rpm gdm-debuginfo-2.30.4-21.el6_0.1.i686.rpm gdm-debuginfo-2.30.4-21.el6_0.1.x86_64.rpm gdm-libs-2.30.4-21.el6_0.1.i686.rpm gdm-libs-2.30.4-21.el6_0.1.x86_64.rpm gdm-plugin-fingerprint-2.30.4-21.el6_0.1.x86_64.rpm gdm-plugin-smartcard-2.30.4-21.el6_0.1.x86_64.rpm gdm-user-switch-applet-2.30.4-21.el6_0.1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/gdm-2.30.4-21.el6_0.1.src.rpm i386: gdm-2.30.4-21.el6_0.1.i686.rpm gdm-debuginfo-2.30.4-21.el6_0.1.i686.rpm gdm-libs-2.30.4-21.el6_0.1.i686.rpm gdm-plugin-fingerprint-2.30.4-21.el6_0.1.i686.rpm gdm-plugin-smartcard-2.30.4-21.el6_0.1.i686.rpm gdm-user-switch-applet-2.30.4-21.el6_0.1.i686.rpm x86_64: gdm-2.30.4-21.el6_0.1.x86_64.rpm gdm-debuginfo-2.30.4-21.el6_0.1.i686.rpm gdm-debuginfo-2.30.4-21.el6_0.1.x86_64.rpm gdm-libs-2.30.4-21.el6_0.1.i686.rpm gdm-libs-2.30.4-21.el6_0.1.x86_64.rpm gdm-plugin-fingerprint-2.30.4-21.el6_0.1.x86_64.rpm gdm-plugin-smartcard-2.30.4-21.el6_0.1.x86_64.rpm gdm-user-switch-applet-2.30.4-21.el6_0.1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2011-0727.html https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2011 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFNkNqpXlSAg2UNWIIRAupyAJ9lGy1RnJtrvIfDbtq5sIVnDoCFWwCghg6l KmqpHchv0ZlUfoHIk6SsTFQ= =jd2G - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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