RHEL 6 : kernel (RHSA-2013:1436)

This script is Copyright (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

Updated kernel packages that fix two security issues and several bugs
are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having
moderate security impact. Common Vulnerability Scoring System (CVSS)
base scores, which give detailed severity ratings, are available for
each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

* A flaw was found in the way the Linux kernel's TCP/IP protocol suite
implementation handled IPv6 sockets that used the UDP_CORK option. A
local, unprivileged user could use this flaw to cause a denial of
service. (CVE-2013-4162, Moderate)

* An information leak flaw was found in the way Linux kernel's device
mapper subsystem, under certain conditions, interpreted data written
to snapshot block devices. An attacker could use this flaw to read
data from disk blocks in free space, which are normally inaccessible.
(CVE-2013-4299, Moderate)

Red Hat would like to thank Hannes Frederic Sowa for reporting
CVE-2013-4162
and Fujitsu for reporting CVE-2013-4299.

This update also fixes several bugs. Documentation for these changes
will be available shortly from the Technical Notes document linked to
in the References section.

All kernel users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. The system
must be rebooted for this update to take effect.

See also :

https://www.redhat.com/security/data/cve/CVE-2013-4162.html
https://www.redhat.com/security/data/cve/CVE-2013-4299.html
http://www.nessus.org/u?64c6b598
http://rhn.redhat.com/errata/RHSA-2013-1436.html

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.0
(CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P)
CVSS Temporal Score : 5.2
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 70466 ()

Bugtraq ID: 61411

CVE ID: CVE-2013-4162
CVE-2013-4299