Ubuntu Security Notice 2712-1 – Gary Kwong, Christian Holler, and Byron Campen discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. Ronald Crane reported 3 security issues. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these, in combination with another security vulnerability, to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. Various other issues were also addressed.