Executive Summary

Summary
TitleGDM: Local Denial of Service
Informations
NameGLSA-200709-11First vendor Publication2007-09-18
VendorGentooLast vendor Modification2007-09-18
Severity (Vendor) LowRevisionN/A

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:S/C:N/I:N/A:P)
Cvss Base Score1.5Attack RangeLocal
Cvss Impact Score2.9Attack ComplexityMedium
Cvss Expoit Score2.7AuthenticationRequires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

GDM can be crashed by a local user, preventing it from managing future displays.

Background

GDM is the GNOME display manager.

Description

The result of a g_strsplit() call is incorrectly parsed in the files daemon/gdm.c, daemon/gdmconfig.c, gui/gdmconfig.c and gui/gdmflexiserver.c, allowing for a null pointer dereference.

Impact

A local user could send a crafted message to /tmp/.gdm_socket that would trigger the null pointer dereference and crash GDM, thus preventing it from managing future displays.

Workaround

Restrict the write permissions on /tmp/.gdm_socket to trusted users only after each GDM restart.

Resolution

All GDM users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose "gnome-base/gdm"

References

[ 1 ] CVE-2007-3381 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3381

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200709-11.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-200709-11.xml

CWE : Common Weakness Enumeration

idName
CWE-20Improper Input Validation

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:10887
 
Oval ID: oval:org.mitre.oval:def:10887
Title: The GDM daemon in GNOME Display Manager (GDM) before 2.14.13, 2.16.x before 2.16.7, 2.18.x before 2.18.4, and 2.19.x before 2.19.5 does not properly handle NULL return values from the g_strsplit function, which allows local users to cause a denial of service (persistent daemon crash) via a crafted command to the daemon's socket, related to (1) gdm.c and (2) gdmconfig.c in daemon/, and (3) gdmconfig.c and (4) gdmflexiserver.c in gui/.
Description: The GDM daemon in GNOME Display Manager (GDM) before 2.14.13, 2.16.x before 2.16.7, 2.18.x before 2.18.4, and 2.19.x before 2.19.5 does not properly handle NULL return values from the g_strsplit function, which allows local users to cause a denial of service (persistent daemon crash) via a crafted command to the daemon's socket, related to (1) gdm.c and (2) gdmconfig.c in daemon/, and (3) gdmconfig.c and (4) gdmflexiserver.c in gui/.
Family: unix Class: vulnerability
Reference(s): CVE-2007-3381
Version: 5
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
Oracle Linux 5
Product(s):
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22688
 
Oval ID: oval:org.mitre.oval:def:22688
Title: ELSA-2007:0777: gdm security and bug fix update (Moderate)
Description: The GDM daemon in GNOME Display Manager (GDM) before 2.14.13, 2.16.x before 2.16.7, 2.18.x before 2.18.4, and 2.19.x before 2.19.5 does not properly handle NULL return values from the g_strsplit function, which allows local users to cause a denial of service (persistent daemon crash) via a crafted command to the daemon's socket, related to (1) gdm.c and (2) gdmconfig.c in daemon/, and (3) gdmconfig.c and (4) gdmflexiserver.c in gui/.
Family: unix Class: patch
Reference(s): ELSA-2007:0777-01
CVE-2007-3381
Version: 3
Platform(s): Oracle Linux 5
Product(s):
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application35

OpenVAS Exploits

DateDescription
2009-04-09Name : Mandriva Update for gdm MDKSA-2007:169 (gdm)
File : nvt/gb_mandriva_MDKSA_2007_169.nasl
2009-02-27Name : Fedora Update for gdm FEDORA-2007-653
File : nvt/gb_fedora_2007_653_gdm_fc6.nasl
2009-02-27Name : Fedora Update for gdm FEDORA-2007-1362
File : nvt/gb_fedora_2007_1362_gdm_fc7.nasl
2008-09-24Name : Gentoo Security Advisory GLSA 200709-11 (gdm)
File : nvt/glsa_200709_11.nasl

Open Source Vulnerability Database (OSVDB)

idDescription
39560GNOME Display Manager (gdm) g_strsplit Function Local DoS

Nessus® Vulnerability Scanner

DateDescription
2013-07-12Name : The remote Oracle Linux host is missing a security update.
File : oraclelinux_ELSA-2007-0777.nasl - Type : ACT_GATHER_INFO
2012-08-01Name : The remote Scientific Linux host is missing a security update.
File : sl_20070807_gdm_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2007-11-06Name : The remote Fedora host is missing a security update.
File : fedora_2007-1362.nasl - Type : ACT_GATHER_INFO
2007-09-24Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200709-11.nasl - Type : ACT_GATHER_INFO
2007-08-28Name : The remote Mandrake Linux host is missing one or more security updates.
File : mandrake_MDKSA-2007-169.nasl - Type : ACT_GATHER_INFO
2007-08-13Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2007-0777.nasl - Type : ACT_GATHER_INFO
2007-08-13Name : The remote CentOS host is missing a security update.
File : centos_RHSA-2007-0777.nasl - Type : ACT_GATHER_INFO

Alert History

If you want to see full details history, please login or register.
0
DateInformations
2014-02-17 11:35:07
  • Multiple Updates