USN-2554-1

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USN-2554-1

Summary: gnupg, gnupg2 vulnerabilities

Details: Daniel Genkin, Lev Pachmanov, Itamar Pipman, and Eran Tromer discovered that GnuPG was susceptible to an attack via physical side channels. A local attacker could use this attack to possibly recover private keys. (CVE-2014-3591) Daniel Genkin, Adi Shamir, and Eran Tromer discovered that GnuPG was susceptible to an attack via physical side channels. A local attacker could use this attack to possibly recover private keys. (CVE-2015-0837) Hanno Böck discovered that GnuPG incorrectly handled certain malformed keyrings. If a user or automated system were tricked into opening a malformed keyring, a remote attacker could use this issue to cause GnuPG to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-1606, CVE-2015-1607) In addition, this update improves GnuPG security by validating that the keys returned by keyservers match those requested.

References: https://ubuntu.com/security/notices/USN-2554-1, https://ubuntu.com/security/CVE-2014-3591, https://ubuntu.com/security/CVE-2014-5270, https://ubuntu.com/security/CVE-2015-0837, https://ubuntu.com/security/CVE-2015-1606, https://ubuntu.com/security/CVE-2015-1607