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RHEL 5 / 6 : xorg-x11-server-utils (RHSA-2011:0433)

high Nessus Plugin ID 53371

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Synopsis

The remote Red Hat host is missing one or more security updates.

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.

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.

Solution

Update the affected xorg-x11-server-utils and / or xorg-x11-server-utils-debuginfo packages.

See Also

https://access.redhat.com/security/cve/cve-2011-0465

https://access.redhat.com/errata/RHSA-2011:0433

Plugin Details

Severity: High

ID: 53371

File Name: redhat-RHSA-2011-0433.nasl

Version: 1.24

Type: local

Agent: unix

Published: 4/12/2011

Updated: 1/14/2021

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-utils, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-utils-debuginfo, cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:5.6, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.0

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 4/11/2011

Vulnerability Publication Date: 4/8/2011

Reference Information

CVE: CVE-2011-0465

BID: 47189

IAVA: 2017-A-0098

RHSA: 2011:0433