Ubuntu Security Notice 583-1 – Ulf Harnhammar discovered that Evolution did not correctly handle format strings when processing encrypted emails. A remote attacker could exploit this by sending a specially crafted email, resulting in arbitrary code execution.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/64392/USN-583-1.txt
Source: https://packetstormsecurity.com/files/64392/Ubuntu-Security-Notice-583-1.html