The system’s firewall could be bypassed by a remote attacker.
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.
11 December 2012
A security issue affects these releases of Ubuntu and its derivatives:
The system’s firewall could be bypassed by a remote attacker.
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.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all the necessary changes.
Vulmon