Ubuntu Security Notice USN-3689-2

Ubuntu Security Notice 3689-2 - USN-3689-1 fixed a vulnerability in Libgcrypt. This update provides the corresponding update for Ubuntu 12.04 ESM. Keegan Ryan discovered that Libgcrypt was susceptible to a side- channel attack. A local attacker could possibly use this attack to recover ECDSA private keys. Various other issues were also addressed.