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Test ID:1.3.6.1.4.1.25623.1.0.71215
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2012:0480
Summary:NOSUMMARY
Description:Description:
The remote host is missing updates announced in
advisory RHSA-2012:0480.

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

This update fixes the following security issue:

* A flaw in the xfrm6_tunnel_rcv() function in the Linux kernel's IPv6
implementation could lead to a use-after-free or double free flaw in
tunnel6_rcv(). A remote attacker could use this flaw to send
specially-crafted packets to a target system that is using IPv6 and also
has the xfrm6_tunnel kernel module loaded, causing it to crash.
(CVE-2012-1583, Important)

If you do not run applications that use xfrm6_tunnel, you can prevent the
xfrm6_tunnel module from being loaded by creating (as the root user) a
/etc/modprobe.d/xfrm6_tunnel.conf file, and adding the following line to
it:

blacklist xfrm6_tunnel

This way, the xfrm6_tunnel module cannot be loaded accidentally. A reboot
is not necessary for this change to take effect.

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

Users should upgrade to these updated packages, which contain backported
patches to correct this issue, and fix the bugs and add the enhancement
noted in the Technical Notes. The system must be rebooted for this update
to take effect.

Solution:
Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

http://rhn.redhat.com/errata/RHSA-2012-0480.html

Risk factor : High

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2012-1583
BugTraq ID: 53139
http://www.securityfocus.com/bid/53139
HPdes Security Advisory: HPSBMU02776
http://marc.info/?l=bugtraq&m=133951357207000&w=2
HPdes Security Advisory: SSRT100852
RedHat Security Advisories: RHSA-2012:0488
http://rhn.redhat.com/errata/RHSA-2012-0488.html
http://www.securitytracker.com/id?1026930
http://secunia.com/advisories/48881
CopyrightCopyright (c) 2012 E-Soft Inc. http://www.securityspace.com

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