========================================================================== Ubuntu Security Notice USN-3850-1 January 09, 2019 nss vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in NSS. Software Description: - nss: Network Security Service library Details: Keegan Ryan discovered that NSS incorrectly handled ECDSA key generation. A local attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. (CVE-2018-0495) It was discovered that NSS incorrectly handled certain v2-compatible ClientHello messages. A remote attacker could possibly use this issue to perform a replay attack. (CVE-2018-12384) It was discovered that NSS incorrectly handled certain padding oracles. A remote attacker could possibly use this issue to perform a variant of the Bleichenbacher attack. (CVE-2018-12404) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10: libnss3 2:3.36.1-1ubuntu1.1 Ubuntu 18.04 LTS: libnss3 2:3.35-2ubuntu2.1 Ubuntu 16.04 LTS: libnss3 2:3.28.4-0ubuntu0.16.04.4 Ubuntu 14.04 LTS: libnss3 2:3.28.4-0ubuntu0.14.04.4 After a standard system update you need to restart any applications that use NSS, such as Evolution, to make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3850-1 CVE-2018-0495, CVE-2018-12384, CVE-2018-12404 Package Information: https://launchpad.net/ubuntu/+source/nss/2:3.36.1-1ubuntu1.1 https://launchpad.net/ubuntu/+source/nss/2:3.35-2ubuntu2.1 https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.04.4 https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.14.04.4