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Test ID:1.3.6.1.4.1.25623.1.0.57043
Category:Ubuntu Local Security Checks
Title:Ubuntu USN-293-1 (gdm)
Summary:Ubuntu USN-293-1 (gdm)
Description:
The remote host is missing an update to gdm
announced via advisory USN-293-1.

A security issue affects the following Ubuntu releases:

Ubuntu 5.10
Ubuntu 6.06 LTS

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

If the admin configured a gdm theme that provided an user list, any
user could activate the gdm setup program by first choosing the setup
option from the menu, clicking on the user list and entering his own
(instead of root's) password. This allowed normal users to configure
potentially dangerous features like remote or automatic login.

Please note that this does not affect a default Ubuntu installation,
since the default theme does not provide an user list. In Ubuntu 6.06
you additionally have to have the ConfigAvailable setting enabled in
gdm.conf to be vulnerable (it is disabled by default).

Ubuntu 5.04 is not affected by this flaw.

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

Ubuntu 5.10:
gdm 2.8.0.5-0ubuntu1.2

Ubuntu 6.06 LTS:
gdm 2.14.6-0ubuntu2.1

In general, a standard system upgrade is sufficient to effect the
necessary changes.

http://www.securityspace.com/smysecure/catid.html?in=USN-293-1

Risk factor : Medium
Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2006-2452
Bugtraq: 20060608 rPSA-2006-0098-1 gdm (Google Search)
http://www.securityfocus.com/archive/1/436428
http://www.gentoo.org/security/en/glsa/glsa-200606-14.xml
http://www.mandriva.com/security/advisories?name=MDKSA-2006:100
SuSE Security Announcement: SUSE-SR:2006:013 (Google Search)
http://lists.suse.com/archive/suse-security-announce/2006-Jun/0003.html
http://www.ubuntulinux.org/support/documentation/usn/usn-293-1
BugTraq ID: 18332
http://www.securityfocus.com/bid/18332
http://www.vupen.com/english/advisories/2006/2239
http://secunia.com/advisories/20552
http://secunia.com/advisories/20627
http://secunia.com/advisories/20532
http://secunia.com/advisories/20636
http://secunia.com/advisories/20587
XForce ISS Database: gdm-facebrowser-security-bypass(27018)
http://xforce.iss.net/xforce/xfdb/27018
CopyrightCopyright (c) 2006 E-Soft Inc. http://www.securityspace.com

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