Executive Summary

Summary
Title GDM vulnerability
Informations
Name USN-1099-1 First vendor Publication 2011-03-30
Vendor Ubuntu Last vendor Modification 2011-03-30
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 6.9 Attack Range Local
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects the following Ubuntu releases:

Ubuntu 9.10 Ubuntu 10.04 LTS Ubuntu 10.10

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

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.

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.

Original Source

Url : http://www.ubuntu.com/usn/USN-1099-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-59 Improper Link Resolution Before File Access ('Link Following')

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:12826
 
Oval ID: oval:org.mitre.oval:def:12826
Title: DSA-2205-1 gdm3 -- privilege escalation
Description: Sebastian Krahmer discovered that the gdm3, the GNOME Desktop Manager, does not properly drop privileges when manipulating files related to the logged-in user. As a result, local users can gain root privileges. The oldstable distribution does not contain a gdm3 package. The gdm package is not affected by this issue.
Family: unix Class: patch
Reference(s): DSA-2205-1
CVE-2011-0727
Version: 5
Platform(s): Debian GNU/Linux 6.0
Debian GNU/kFreeBSD 6.0
Product(s): gdm3
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:13786
 
Oval ID: oval:org.mitre.oval:def:13786
Title: USN-1099-1 -- gdm vulnerability
Description: Sebastian Krahmer discovered that GDM 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.
Family: unix Class: patch
Reference(s): USN-1099-1
CVE-2011-0727
Version: 5
Platform(s): Ubuntu 10.10
Ubuntu 9.10
Ubuntu 10.04
Product(s): gdm
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:21930
 
Oval ID: oval:org.mitre.oval:def:21930
Title: RHSA-2011:0395: gdm security update (Moderate)
Description: GNOME Display Manager (gdm) 2.x before 2.32.1 allows local users to change the ownership of arbitrary files via a symlink attack on a (1) dmrc or (2) face icon file under /var/cache/gdm/.
Family: unix Class: patch
Reference(s): RHSA-2011:0395-01
CVE-2011-0727
Version: 4
Platform(s): Red Hat Enterprise Linux 6
Product(s): gdm
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:23685
 
Oval ID: oval:org.mitre.oval:def:23685
Title: ELSA-2011:0395: gdm security update (Moderate)
Description: GNOME Display Manager (gdm) 2.x before 2.32.1 allows local users to change the ownership of arbitrary files via a symlink attack on a (1) dmrc or (2) face icon file under /var/cache/gdm/.
Family: unix Class: patch
Reference(s): ELSA-2011:0395-01
CVE-2011-0727
Version: 6
Platform(s): Oracle Linux 6
Product(s): gdm
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27397
 
Oval ID: oval:org.mitre.oval:def:27397
Title: DEPRECATED: ELSA-2011-0395 -- gdm security update (moderate)
Description: [2.30.4-21.0.2.el6_0.1] - Added oracle-enterprise.patch to show oracle-release contents. [2.30.4-21.1] - Fix CVE-2011-0727
Family: unix Class: patch
Reference(s): ELSA-2011-0395
CVE-2011-0727
Version: 4
Platform(s): Oracle Linux 6
Product(s): gdm
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 27

OpenVAS Exploits

Date Description
2012-06-06 Name : RedHat Update for gdm RHSA-2011:0395-01
File : nvt/gb_RHSA-2011_0395-01_gdm.nasl
2011-05-12 Name : Debian Security Advisory DSA 2205-1 (gdm3)
File : nvt/deb_2205_1.nasl
2011-05-12 Name : FreeBSD Ports: gdm
File : nvt/freebsd_gdm.nasl
2011-04-19 Name : Fedora Update for gdm FEDORA-2011-4351
File : nvt/gb_fedora_2011_4351_gdm_fc13.nasl
2011-04-11 Name : Mandriva Update for gdm MDVSA-2011:070 (gdm)
File : nvt/gb_mandriva_MDVSA_2011_070.nasl
2011-04-06 Name : Fedora Update for gdm FEDORA-2011-4335
File : nvt/gb_fedora_2011_4335_gdm_fc14.nasl
2011-04-01 Name : Ubuntu Update for gdm vulnerability USN-1099-1
File : nvt/gb_ubuntu_USN_1099_1.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
72551 GNOME Display Manager (gdm) /var/cache/gdm/ Multiple File Symlink Local Privi...

Nessus® Vulnerability Scanner

Date Description
2014-12-15 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201412-09.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_3_gdm-110330.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_4_gdm-110330.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2011-0395.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20110329_gdm_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2011-04-15 Name : The remote Fedora host is missing a security update.
File : fedora_2011-4351.nasl - Type : ACT_GATHER_INFO
2011-04-11 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2011-070.nasl - Type : ACT_GATHER_INFO
2011-04-04 Name : The remote Fedora host is missing a security update.
File : fedora_2011-4335.nasl - Type : ACT_GATHER_INFO
2011-03-31 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-1099-1.nasl - Type : ACT_GATHER_INFO
2011-03-30 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_c6fbd44759ed11e08d040015f2db7bde.nasl - Type : ACT_GATHER_INFO
2011-03-29 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2205.nasl - Type : ACT_GATHER_INFO
2011-03-29 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2011-0395.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2014-02-17 11:58:27
  • Multiple Updates