Ubuntu alert USN-2540-1 (gnutls26, gnutls28)
| From: | Marc Deslauriers <marc.deslauriers@canonical.com> | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-2540-1] GnuTLS vulnerabilities | |
| Date: | Mon, 23 Mar 2015 16:04:24 -0400 | |
| Message-ID: | <551071C8.4020805@canonical.com> |
========================================================================== Ubuntu Security Notice USN-2540-1 March 23, 2015 gnutls26, gnutls28 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS - Ubuntu 10.04 LTS Summary: Several security issues were fixed in GnuTLS. Software Description: - gnutls28: GNU TLS library - gnutls26: GNU TLS library Details: It was discovered that GnuTLS did not perform date and time checks on CA certificates, contrary to expectations. This issue only affected Ubuntu 10.04 LTS. (CVE-2014-8155) Nikos Mavrogiannopoulos discovered that GnuTLS incorrectly verified that signature algorithms matched. A remote attacker could possibly use this issue to downgrade to a disallowed algorithm. This issue only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-0282) It was discovered that GnuTLS incorrectly verified certificate algorithms. A remote attacker could possibly use this issue to downgrade to a disallowed algorithm. (CVE-2015-0294) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.10: libgnutls-deb0-28 3.2.16-1ubuntu2.2 Ubuntu 14.04 LTS: libgnutls26 2.12.23-12ubuntu2.2 Ubuntu 12.04 LTS: libgnutls26 2.12.14-5ubuntu3.9 Ubuntu 10.04 LTS: libgnutls26 2.8.5-2ubuntu0.7 In general, a standard system update will make all the necessary changes. References: http://www.ubuntu.com/usn/usn-2540-1 CVE-2014-8155, CVE-2015-0282, CVE-2015-0294 Package Information: https://launchpad.net/ubuntu/+source/gnutls28/3.2.16-1ubu... https://launchpad.net/ubuntu/+source/gnutls26/2.12.23-12u... https://launchpad.net/ubuntu/+source/gnutls26/2.12.14-5ub... https://launchpad.net/ubuntu/+source/gnutls26/2.8.5-2ubun... -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security...