RHEL 6 / 7 : xorg-x11-server (RHSA-2015:0797)

This script is Copyright (C) 2015-2017 Tenable Network Security, Inc.


Synopsis :

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

Description :

Updated xorg-x11-server packages that fix one security issue are now
available for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security 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.

X.Org is an open source implementation of the X Window System. It
provides the basic low-level functionality that full-fledged graphical
user interfaces are designed upon.

A buffer over-read flaw was found in the way the X.Org server handled
XkbGetGeometry requests. A malicious, authorized client could use this
flaw to disclose portions of the X.Org server memory, or cause the
X.Org server to crash using a specially crafted XkbGetGeometry
request. (CVE-2015-0255)

This issue was discovered by Olivier Fourdan of Red Hat.

All xorg-x11-server users are advised to upgrade to these updated
packages, which contain a backported patch to correct this issue.

See also :

https://www.redhat.com/security/data/cve/CVE-2015-0255.html
http://www.x.org/wiki/Development/Security/Advisory-2015-02-10/
http://rhn.redhat.com/errata/RHSA-2015-0797.html

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.4
(CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P)
CVSS Temporal Score : 5.3
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 82693 ()

Bugtraq ID:

CVE ID: CVE-2015-0255

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