[USN-1664-1] Linux kernel (EC2) vulnerability

John Johansen john.johansen at canonical.com
Thu Dec 13 04:00:47 UTC 2012


==========================================================================
Ubuntu Security Notice USN-1664-1
December 13, 2012

linux-ec2 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 10.04 LTS

Summary:

The system's firewall could be bypassed by a remote attacker.

Software Description:
- linux-ec2: Linux kernel for EC2

Details:

Zhang Zuotao discovered a bug in the Linux kernel's handling of overlapping
fragments in ipv6. A remote attacker could exploit this flaw to bypass
firewalls and initial new network connections that should have been blocked
by the firewall.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 10.04 LTS:
  linux-image-2.6.32-350-ec2      2.6.32-350.58

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1664-1
  CVE-2012-4444

Package Information:
  https://launchpad.net/ubuntu/+source/linux-ec2/2.6.32-350.58

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