Ubuntu Security Notice 542-2 – USN-542-1 fixed a vulnerability in poppler. This update provides the corresponding updates for KWord, part of KOffice. Secunia Research discovered several vulnerabilities in poppler. If a user were tricked into loading a specially crafted PDF file, a remote attacker could cause a denial of service or possibly execute arbitrary code with the user’s privileges in applications linked against poppler.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/60990/USN-542-2.txt
Source: https://packetstormsecurity.com/files/60990/Ubuntu-Security-Notice-542-2.html