KDE Display Manager (KDM) /.dmrc user session type symlink
| kde-kdm-symlink (27181) |  Medium Risk |
Description:
The KDE Display Manager (KDM) manages the /.dmrc user session file in an insecure manner. A local attacker could exploit this vulnerability using symbolic link attacks to read arbitrary files on the system with elevated privileges.
Platforms Affected:
- Canonical, Ubuntu 5.04
- Canonical, Ubuntu 5.10
- Canonical, Ubuntu 6.06 LTS
- Debian, Debian Linux 3.1
- Gentoo, Linux
- KDE, K Desktop Environment (KDE) 3.2.0 - 3.5.3
- MandrakeSoft, Mandrake Linux 2006 X86_64
- MandrakeSoft, Mandrake Linux 2006
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- Novell, Linux Desktop 9
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 4 Desktop
- rPath, rPath Linux 1
- SuSE, SuSE Linux 10.0
- SuSE, SuSE Linux 10.1
- SuSE, SuSE Linux 9.1
- SuSE, SuSE Linux 9.2
- SuSE, SuSE Linux 9.3
- SuSE, SuSE SLES 9
Remedy:
Apply the patch for this vulnerability, as listed in KDE Security Advisory 2006-06-14. See References.
For Ubuntu Linux:
Refer to USN-301-1 for patch, upgrade, or suggested workaround information. See References.
For Mandriva Linux:
Refer to Mandriva Security Advisory MDKSA-2006:105 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux:
Refer to RHSA-2006:0584-4 for patch, upgrade, or suggested workaround information. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 2006-06-23 for patch, upgrade, or suggested workaround information. See References.
For Debian GNU/Linux:
Refer to DSA-1156-1 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SA:2006:039 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for patch or upgrade information.
Consequences:
File Manipulation
References:
- BugTraq Mailing List, Thu Jun 15 2006 - 14:01:16 CDT , rPSA-2006-0106-1 kdebase at http://archives.neohapsis.com/archives/bugtraq/2006-06/0309.html.
- BugTraq Mailing List, Wed Jun 14 2006 - 13:30:39 CDT , [KDE Security Advisory] KDM symlink attack vulnerability at http://archives.neohapsis.com/archives/bugtraq/2006-06/0279.html.
- KDE Security Advisory 2006-06-14, KDM symlink attack vulnerability at http://www.kde.org/info/security/advisory-20060614-1.txt.
- ASA-2006-127: kdebase security update (RHSA-2006-0548)
- BID-18431: KDE KDM Session Type Symbolic Link Vulnerability
- CVE-2006-2449: KDE Display Manager (KDM) in KDE 3.2.0 up to 3.5.3 allows local users to read arbitrary files via a symlink attack related to the session type for login.
- DSA-1156: kdebase -- programming error
- GLSA-200606-23: KDM: Symlink vulnerability
- MDKSA-2006:105: Updated kdebase packages fix local vulnerability in kdm
- MDKSA-2006:106: Updated mdkkdm packages fix local vulnerability
- OSVDB ID: 26511: KDE KDM Login Sesson Type Symlink Arbitrary File Read
- RHSA-2006-0548: kdebase security update
- SA20602: KDE KDM Arbitrary File Reading Vulnerability
- SECTRACK ID: 1016297: KDE KDM Symlink Bug Lets Local Users View Files
- SUSE-SA:2006:039: KDM information disclosure
- USN-301-1: kdm vulnerability
- VUPEN/ADV-2006-2355: KDE Display Manager (KDM) client.c Local Information Disclosure Vulnerability
Reported:
Jun 14, 2006
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net