Ubuntu Security Notice 501-2 – USN-501-1 fixed vulnerabilities in Jasper. This update provides the corresponding update for the Jasper internal to Ghostscript. It was discovered that Jasper did not correctly handle corrupted JPEG2000 images. By tricking a user into opening a specially crafted JPG, a remote attacker could cause the application using libjasper to crash, resulting in a denial of service.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/60327/USN-501-2.txt
Source: https://packetstormsecurity.com/files/60327/Ubuntu-Security-Notice-501-2.html