Two intermediate CA certificates were mis-issued by the TURKTRUST certificate authority. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to view sensitive information.
Updated packages are available from security.ubuntu.com.
========================================================================== Ubuntu Security Notice USN-1687-1 January 14, 2013 nss vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.10 - Ubuntu 12.04 LTS - Ubuntu 11.10 - Ubuntu 10.04 LTS Summary: Fraudulent security certificates could allow sensitive information to be exposed when accessing the Internet. Software Description: - nss: Network Security Service library Details: Two intermediate CA certificates were mis-issued by the TURKTRUST certificate authority. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to view sensitive information. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.10: libnss3-1d 3.14.1-0ckbi1.93ubuntu.0.12.10.1 Ubuntu 12.04 LTS: libnss3-1d 3.14.1-0ckbi1.93ubuntu.0.12.04.1 Ubuntu 11.10: libnss3-1d 3.14.1-0ckbi1.93ubuntu.0.11.10.1 Ubuntu 10.04 LTS: libnss3-1d 3.14.1-0ckbi1.93ubuntu.0.10.04.1 After a standard system update you need to restart any applications that use NSS, such as Evolution and Chromium, to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1687-1 CVE-2013-0743 Package Information: https://launchpad.net/ubuntu/+source/nss/3.14.1-0ckbi1.93ubuntu.0.12.10.1 https://launchpad.net/ubuntu/+source/nss/3.14.1-0ckbi1.93ubuntu.0.12.04.1 https://launchpad.net/ubuntu/+source/nss/3.14.1-0ckbi1.93ubuntu.0.11.10.1 https://launchpad.net/ubuntu/+source/nss/3.14.1-0ckbi1.93ubuntu.0.10.04.1