Jetty could be made to hang or crash if it received specially crafted network traffic.
It was discovered that Jetty computed hash values for form parameters without restricting the ability to trigger hash collisions predictably. This could allow a remote attacker to cause a denial of service by sending many crafted parameters.
26 April 2012
A security issue affects these releases of Ubuntu and its derivatives:
Jetty could be made to hang or crash if it received specially crafted network traffic.
It was discovered that Jetty computed hash values for form parameters without restricting the ability to trigger hash collisions predictably. This could allow a remote attacker to cause a denial of service by sending many crafted parameters.
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.
In general, a standard system update will make all the necessary changes.
Vulmon