Ubuntu Security Notice 2693-1 – Jonathan Foote discovered that Bind incorrectly handled certain TKEY queries. A remote attacker could use this issue with a specially crafted packet to cause Bind to crash, resulting in a denial of service. Pories Ediansyah discovered that Bind incorrectly handled certain configurations involving DNS64. A remote attacker could use this issue with a specially crafted query to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS. Various other issues were also addressed.