============================================================================ Ubuntu Security Notice USN-2727-1 September 01, 2015 gnutls28 vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 15.04 Summary: GnuTLS could be made to crash or run programs if it processed a specially crafted certificate. Software Description: - gnutls28: GNU TLS library Details: It was discovered that GnuTLS incorrectly handled parsing CRL distribution points. A remote attacker could possibly use this issue to cause a denial of service, or execute arbitrary code. (CVE-2015-3308) Kurt Roeckx discovered that GnuTLS incorrectly handled a long DistinguishedName (DN) entry in a certificate. A remote attacker could possibly use this issue to cause a denial of service, or execute arbitrary code. (CVE-2015-6251) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 15.04: libgnutls-deb0-28 3.3.8-3ubuntu3.1 In general, a standard system update will make all the necessary changes. References: http://www.ubuntu.com/usn/usn-2727-1 CVE-2015-3308, CVE-2015-6251 Package Information: https://launchpad.net/ubuntu/+source/gnutls28/3.3.8-3ubuntu3.1