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Test ID:1.3.6.1.4.1.25623.1.0.69379
Category:Ubuntu Local Security Checks
Title:Ubuntu USN-1099-1 (gdm)
Summary:Ubuntu USN-1099-1 (gdm)
Description:The remote host is missing an update to gdm
announced via advisory USN-1099-1.

Details follow:

Sebastian Krahmer discovered that GDM (GNOME Display Manager) did not
properly drop privileges when handling the cache directories used
to store users' dmrc and face icon files. This could allow a local
attacker to change the ownership of arbitrary files, thereby gaining
root privileges.

Solution:
The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 9.10:
gdm 2.28.1-0ubuntu2.3

Ubuntu 10.04 LTS:
gdm 2.30.2.is.2.30.0-0ubuntu5.1

Ubuntu 10.10:
gdm 2.30.5-0ubuntu4.1

After a standard system update you need to log out all desktop sessions
and restart GDM to make all the necessary changes.

http://www.securityspace.com/smysecure/catid.html?in=USN-1099-1

Risk factor : High
Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-0727
http://mail.gnome.org/archives/gdm-list/2011-March/msg00020.html
Debian Security Information: DSA-2205 (Google Search)
http://www.debian.org/security/2011/dsa-2205
http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057333.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057931.html
http://www.mandriva.com/security/advisories?name=MDVSA-2011:070
http://www.redhat.com/support/errata/RHSA-2011-0395.html
http://www.ubuntu.com/usn/USN-1099-1
BugTraq ID: 47063
http://www.securityfocus.com/bid/47063
http://securitytracker.com/id?1025264
http://secunia.com/advisories/43714
http://secunia.com/advisories/43854
http://secunia.com/advisories/44021
http://www.vupen.com/english/advisories/2011/0786
http://www.vupen.com/english/advisories/2011/0787
http://www.vupen.com/english/advisories/2011/0797
http://www.vupen.com/english/advisories/2011/0847
http://www.vupen.com/english/advisories/2011/0911
XForce ISS Database: display-manager-priv-escalation(66377)
http://xforce.iss.net/xforce/xfdb/66377
CopyrightCopyright (c) 2011 E-Soft Inc. http://www.securityspace.com

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