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RHEL 5 / 6 : libXfont (RHSA-2011:1154)

high Nessus Plugin ID 55824

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Synopsis

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

Description

Updated libXfont packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having important 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 libXfont packages provide the X.Org libXfont runtime library.
X.Org is an open source implementation of the X Window System.

A buffer overflow flaw was found in the way the libXfont library, used by the X.Org server, handled malformed font files compressed using UNIX compress. A malicious, local user could exploit this issue to potentially execute arbitrary code with the privileges of the X.Org server. (CVE-2011-2895)

Users of libXfont should upgrade to these updated packages, which contain a backported patch to resolve this issue. All running X.Org server instances must be restarted for the update to take effect.

Solution

Update the affected libXfont, libXfont-debuginfo and / or libXfont-devel packages.

See Also

https://access.redhat.com/security/cve/cve-2011-2895

https://access.redhat.com/errata/RHSA-2011:1154

Plugin Details

Severity: High

ID: 55824

File Name: redhat-RHSA-2011-1154.nasl

Version: 1.19

Type: local

Agent: unix

Published: 8/12/2011

Updated: 1/14/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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:libxfont, p-cpe:/a:redhat:enterprise_linux:libxfont-debuginfo, p-cpe:/a:redhat:enterprise_linux:libxfont-devel, cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.1

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: 8/11/2011

Vulnerability Publication Date: 8/19/2011

Reference Information

CVE: CVE-2011-2895

BID: 49124

RHSA: 2011:1154