Scientific Linux Security Update : X11 client libraries on SL6.x i386/x86_64

This script is Copyright (C) 2014 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

Multiple integer overflow flaws, leading to heap-based buffer
overflows, were found in the way various X11 client libraries handled
certain protocol data. An attacker able to submit invalid protocol
data to an X11 server via a malicious X11 client could use either of
these flaws to potentially escalate their privileges on the system.
(CVE-2013-1981, CVE-2013-1982, CVE-2013-1983, CVE-2013-1984,
CVE-2013-1985, CVE-2013-1986, CVE-2013-1987, CVE-2013-1988,
CVE-2013-1989, CVE-2013-1990, CVE-2013-1991, CVE-2013-2003,
CVE-2013-2062, CVE-2013-2064)

Multiple array index errors, leading to heap-based buffer
out-of-bounds write flaws, were found in the way various X11 client
libraries handled data returned from an X11 server. A malicious X11
server could possibly use this flaw to execute arbitrary code with the
privileges of the user running an X11 client. (CVE-2013-1997,
CVE-2013-1998, CVE-2013-1999, CVE-2013-2000, CVE-2013-2001,
CVE-2013-2002, CVE-2013-2066)

A buffer overflow flaw was found in the way the XListInputDevices()
function of X.Org X11's libXi runtime library handled signed numbers.
A malicious X11 server could possibly use this flaw to execute
arbitrary code with the privileges of the user running an X11 client.
(CVE-2013-1995)

A flaw was found in the way the X.Org X11 libXt runtime library used
uninitialized pointers. A malicious X11 server could possibly use this
flaw to execute arbitrary code with the privileges of the user running
an X11 client. (CVE-2013-2005)

Two stack-based buffer overflow flaws were found in the way libX11,
the Core X11 protocol client library, processed certain user-specified
files. A malicious X11 server could possibly use this flaw to crash an
X11 client via a specially crafted file. (CVE-2013-2004)

The xkeyboard-config package has been upgraded to upstream version
2.11, which provides a number of bug fixes and enhancements over the
previous version.

This update also fixes the following bugs :

- Previously, updating the mesa-libGL package did not
update the libX11 package, although it was listed as a
dependency of mesa-libGL. This bug has been fixed and
updating mesa-libGL now updates all dependent packages
as expected.

- Previously, closing a customer application could
occasionally cause the X Server to terminate
unexpectedly. After this update, the X Server no longer
hangs when a user closes a customer application.

See also :

http://www.nessus.org/u?690bb86a

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)