Ubuntu Security Notice 3490-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing-like context, an attacker could potentially exploit these to bypass same-origin restrictions, cause a denial of service via application crash, or execute arbitrary code.
8865834d048308c75d460b35d2d88a91e987a3fa7a626ec895c16af3fd6a09fd