GLSA-200709-11 : GDM: Local Denial of Service

This script is Copyright (C) 2007-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-200709-11
(GDM: Local Denial of Service)

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.

See also :

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

Solution :

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

Risk factor :

Low / CVSS Base Score : 1.5
(CVSS2#AV:L/AC:M/Au:S/C:N/I:N/A:P)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 26101 (gentoo_GLSA-200709-11.nasl)

Bugtraq ID:

CVE ID: CVE-2007-3381