Executive Summary

Summary
Title xorg-x11-server-utils security update
Informations
Name RHSA-2011:0433 First vendor Publication 2011-04-11
Vendor RedHat Last vendor Modification 2011-04-11
Severity (Vendor) Moderate Revision 01

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:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 9.3 Attack Range Network
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

An updated xorg-x11-server-utils package that fixes one security issue is now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

The xorg-x11-server-utils package contains a collection of utilities used to modify and query the runtime configuration of the X.Org server. X.Org is an open source implementation of the X Window System.

A flaw was found in the X.Org X server resource database utility, xrdb. Certain variables were not properly sanitized during the launch of a user's graphical session, which could possibly allow a remote attacker to execute arbitrary code with root privileges, if they were able to make the display manager execute xrdb with a specially-crafted X client hostname. For example, by configuring the hostname on the target system via a crafted DHCP reply, or by using the X Display Manager Control Protocol (XDMCP) to connect to that system from a host that has a special DNS name. (CVE-2011-0465)

Red Hat would like to thank Matthieu Herrb for reporting this issue. Upstream acknowledges Sebastian Krahmer of the SuSE Security Team as the original reporter.

Users of xorg-x11-server-utils should upgrade to this updated package, which contains a backported patch to resolve this issue. All running X.Org server instances must be restarted for this update to take effect.

4. Solution:

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

680196 - CVE-2011-0465 xorg: xrdb code execution via crafted X client hostname

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2011-0433.html

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:12949
 
Oval ID: oval:org.mitre.oval:def:12949
Title: DSA-2213-1 x11-xserver-utils -- missing input sanitisation
Description: Sebastian Krahmer discovered that the xrdb utility of x11-xserver-utils, a X server resource database utility, is not properly filtering crafted hostnames. This allows a remote attacker to execute arbitrary code with root privileges given that either remote logins via xdmcp are allowed or the attacker is able to place a rogue DHCP server into the victims network. The oldstable distribution, this problem has been fixed in version 7.3+6.
Family: unix Class: patch
Reference(s): DSA-2213-1
CVE-2011-0465
Version: 7
Platform(s): Debian GNU/Linux 6.0
Debian GNU/kFreeBSD 6.0
Product(s): x11-xserver-utils
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:13531
 
Oval ID: oval:org.mitre.oval:def:13531
Title: USN-1107-1 -- x11-xserver-utils vulnerability
Description: Sebastian Krahmer discovered that the xrdb utility incorrectly filtered crafted hostnames. An attacker could use this flaw with a malicious DHCP server or with a remote xdmcp login and execute arbitrary code, resulting in root privilege escalation.
Family: unix Class: patch
Reference(s): USN-1107-1
CVE-2011-0465
Version: 7
Platform(s): Ubuntu 8.04
Ubuntu 10.10
Ubuntu 9.10
Ubuntu 10.04
Product(s): x11-xserver-utils
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:21165
 
Oval ID: oval:org.mitre.oval:def:21165
Title: RHSA-2011:0433: xorg-x11-server-utils security update (Moderate)
Description: xrdb.c in xrdb before 1.0.9 in X.Org X11R7.6 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a (1) DHCP or (2) XDMCP message.
Family: unix Class: patch
Reference(s): RHSA-2011:0433-01
CVE-2011-0465
CESA-2011:0433-CentOS 5
Version: 6
Platform(s): Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 5
CentOS Linux 5
Product(s): xorg-x11-server-utils
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:23703
 
Oval ID: oval:org.mitre.oval:def:23703
Title: ELSA-2011:0433: xorg-x11-server-utils security update (Moderate)
Description: xrdb.c in xrdb before 1.0.9 in X.Org X11R7.6 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a (1) DHCP or (2) XDMCP message.
Family: unix Class: patch
Reference(s): ELSA-2011:0433-01
CVE-2011-0465
Version: 6
Platform(s): Oracle Linux 6
Product(s): xorg-x11-server-utils
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:28013
 
Oval ID: oval:org.mitre.oval:def:28013
Title: DEPRECATED: ELSA-2011-0433 -- xorg-x11-server-utils security update (moderate)
Description: [7.4-15.el6_0.1] - cve-2011-0465: Sanitize cpp macro expansion. (CVE 2011-0465)
Family: unix Class: patch
Reference(s): ELSA-2011-0433
CVE-2011-0465
Version: 4
Platform(s): Oracle Linux 5
Oracle Linux 6
Product(s): xorg-x11-server-utils
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 6
Application 23

OpenVAS Exploits

Date Description
2012-07-30 Name : CentOS Update for xorg-x11-server-utils CESA-2011:0433 centos5 x86_64
File : nvt/gb_CESA-2011_0433_xorg-x11-server-utils_centos5_x86_64.nasl
2011-08-09 Name : CentOS Update for xorg-x11-server-utils CESA-2011:0433 centos5 i386
File : nvt/gb_CESA-2011_0433_xorg-x11-server-utils_centos5_i386.nasl
2011-06-20 Name : Fedora Update for xorg-x11-server-utils FEDORA-2011-4879
File : nvt/gb_fedora_2011_4879_xorg-x11-server-utils_fc13.nasl
2011-05-12 Name : Debian Security Advisory DSA 2213-1 (x11-xserver-utils)
File : nvt/deb_2213_1.nasl
2011-05-12 Name : FreeBSD Ports: xrdb
File : nvt/freebsd_xrdb.nasl
2011-04-22 Name : Mandriva Update for xrdb MDVSA-2011:076 (xrdb)
File : nvt/gb_mandriva_MDVSA_2011_076.nasl
2011-04-22 Name : SuSE Update for xorg-x11 SUSE-SA:2011:016
File : nvt/gb_suse_2011_016.nasl
2011-04-19 Name : RedHat Update for xorg-x11 RHSA-2011:0432-01
File : nvt/gb_RHSA-2011_0432-01_xorg-x11.nasl
2011-04-19 Name : RedHat Update for xorg-x11-server-utils RHSA-2011:0433-01
File : nvt/gb_RHSA-2011_0433-01_xorg-x11-server-utils.nasl
2011-04-19 Name : Fedora Update for xorg-x11-server-utils FEDORA-2011-4871
File : nvt/gb_fedora_2011_4871_xorg-x11-server-utils_fc14.nasl
2011-04-11 Name : Ubuntu Update for x11-xserver-utils vulnerability USN-1107-1
File : nvt/gb_ubuntu_USN_1107_1.nasl
0000-00-00 Name : Slackware Advisory SSA:2011-096-01 xrdb
File : nvt/esoft_slk_ssa_2011_096_01.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
75045 X.Org xrdb xrdb.c Hostname Shell Metacharacter Arbitrary Local Command Injection

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_4_xorg-x11-110405.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_3_xorg-x11-110405.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2011-0432.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing a security update.
File : oraclelinux_ELSA-2011-0433.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing a security update.
File : sl_20110411_xorg_x11_server_utils_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20110411_xorg_x11_on_SL4_x.nasl - Type : ACT_GATHER_INFO
2011-12-13 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_xorg-x11-7416.nasl - Type : ACT_GATHER_INFO
2011-06-12 Name : The remote Fedora host is missing a security update.
File : fedora_2011-4879.nasl - Type : ACT_GATHER_INFO
2011-05-05 Name : The remote openSUSE host is missing a security update.
File : suse_11_2_xorg-x11-110405.nasl - Type : ACT_GATHER_INFO
2011-04-22 Name : The remote Mandriva Linux host is missing a security update.
File : mandriva_MDVSA-2011-076.nasl - Type : ACT_GATHER_INFO
2011-04-20 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2011-0432.nasl - Type : ACT_GATHER_INFO
2011-04-18 Name : The remote Fedora host is missing a security update.
File : fedora_2011-4984.nasl - Type : ACT_GATHER_INFO
2011-04-15 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_2eccb24f61c011e0b1990015f2db7bde.nasl - Type : ACT_GATHER_INFO
2011-04-15 Name : The remote Fedora host is missing a security update.
File : fedora_2011-4871.nasl - Type : ACT_GATHER_INFO
2011-04-15 Name : The remote CentOS host is missing a security update.
File : centos_RHSA-2011-0433.nasl - Type : ACT_GATHER_INFO
2011-04-13 Name : The remote SuSE 9 host is missing a security-related patch.
File : suse9_12700.nasl - Type : ACT_GATHER_INFO
2011-04-13 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_xorg-x11-7417.nasl - Type : ACT_GATHER_INFO
2011-04-12 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2011-0433.nasl - Type : ACT_GATHER_INFO
2011-04-12 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2011-0432.nasl - Type : ACT_GATHER_INFO
2011-04-12 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2011-096-01.nasl - Type : ACT_GATHER_INFO
2011-04-11 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2213.nasl - Type : ACT_GATHER_INFO
2011-04-07 Name : The remote SuSE 11 host is missing one or more security updates.
File : suse_11_xorg-x11-110323.nasl - Type : ACT_GATHER_INFO
2011-04-07 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-1107-1.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:54:35
  • Multiple Updates