QEMU could be made to crash or run programs if it received specially crafted network traffic.
It was discovered that QEMU incorrectly handled certain e1000 packet sizes. In certain environments, an attacker may use this flaw in combination with large packets to cause a denial of service or execute arbitrary code in the guest.
16 January 2013
A security issue affects these releases of Ubuntu and its derivatives:
QEMU could be made to crash or run programs if it received specially crafted network traffic.
It was discovered that QEMU incorrectly handled certain e1000 packet sizes. In certain environments, an attacker may use this flaw in combination with large packets to cause a denial of service or execute arbitrary code in the guest.
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 restart your virtual machines to make all the necessary changes.
Vulmon