GLSA-201110-19 : X.Org X Server: Multiple vulnerabilities

Low Nessus Plugin ID 56594


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


The remote host is affected by the vulnerability described in GLSA-201110-19 (X.Org X Server: Multiple vulnerabilities)

vladz reported the following vulnerabilities in the X.Org X server:
The X.Org X server follows symbolic links when trying to access the lock file for a X display, showing a predictable behavior depending on the file type of the link target (CVE-2011-4028).
The X.Org X server lock file mechanism allows for a race condition to cause the X server to modify the file permissions of an arbitrary file to 0444 (CVE-2011-4029).
Impact :

A local attacker could exploit these vulnerabilities to disclose information by making arbitrary files on a system world-readable or gain information whether a specified file exists on the system and whether it is a file, directory, or a named pipe.
Workaround :

There is no known workaround at this time.


All X.Org X Server 1.9 users should upgrade to the latest 1.9 version:
# emerge --sync # emerge --ask --oneshot --verbose '>=x11-base/xorg-server-1.9.5-r1' All X.Org X Server 1.10 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=x11-base/xorg-server-1.10.4-r1'

See Also

Plugin Details

Severity: Low

ID: 56594

File Name: gentoo_GLSA-201110-19.nasl

Version: $Revision: 1.6 $

Type: local

Published: 2011/10/24

Modified: 2015/07/10

Dependencies: 12634

Risk Information

Risk Factor: Low


Base Score: 1.9

Temporal Score: 1.4

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:xorg-server, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2011/10/22

Reference Information

CVE: CVE-2011-4028, CVE-2011-4029

OSVDB: 76668, 76669

GLSA: 201110-19