Ubuntu alert USN-3183-1 (gnutls26, gnutls28)
| From: | Marc Deslauriers <marc.deslauriers@canonical.com> | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-3183-1] GnuTLS vulnerabilities | |
| Date: | Wed, 1 Feb 2017 14:06:57 -0500 | |
| Message-ID: | <5701e635-4958-354e-fe4a-15f2b91b980a@canonical.com> |
========================================================================== Ubuntu Security Notice USN-3183-1 February 01, 2017 gnutls26, gnutls28 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.10 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS Summary: Several security issues were fixed in GnuTLS. Software Description: - gnutls28: GNU TLS library - gnutls26: GNU TLS library Details: Stefan Buehler discovered that GnuTLS incorrectly verified the serial length of OCSP responses. A remote attacker could possibly use this issue to bypass certain certificate validation measures. This issue only applied to Ubuntu 16.04 LTS. (CVE-2016-7444) Shi Lei discovered that GnuTLS incorrectly handled certain warning alerts. A remote attacker could possibly use this issue to cause GnuTLS to hang, resulting in a denial of service. This issue has only been addressed in Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-8610) It was discovered that GnuTLS incorrectly decoded X.509 certificates with a Proxy Certificate Information extension. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2017-5334) It was discovered that GnuTLS incorrectly handled certain OpenPGP certificates. A remote attacker could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-5335, CVE-2017-5336, CVE-2017-5337) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.10: libgnutls30 3.5.3-5ubuntu1.1 Ubuntu 16.04 LTS: libgnutls30 3.4.10-4ubuntu1.2 Ubuntu 14.04 LTS: libgnutls26 2.12.23-12ubuntu2.6 Ubuntu 12.04 LTS: libgnutls26 2.12.14-5ubuntu3.13 In general, a standard system update will make all the necessary changes. References: http://www.ubuntu.com/usn/usn-3183-1 CVE-2016-7444, CVE-2016-8610, CVE-2017-5334, CVE-2017-5335, CVE-2017-5336, CVE-2017-5337 Package Information: https://launchpad.net/ubuntu/+source/gnutls28/3.5.3-5ubun... https://launchpad.net/ubuntu/+source/gnutls28/3.4.10-4ubu... https://launchpad.net/ubuntu/+source/gnutls26/2.12.23-12u... https://launchpad.net/ubuntu/+source/gnutls26/2.12.14-5ub... -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security...