Advisory Published

USN-3270-1: NSS vulnerabilities

First published: Thu Apr 27 2017(Updated: )

Karthik Bhargavan and Gaetan Leurent discovered that the DES and Triple DES ciphers were vulnerable to birthday attacks. A remote attacker could possibly use this flaw to obtain clear text data from long encrypted sessions. This update causes NSS to limit use of the same symmetric key. (CVE-2016-2183) It was discovered that NSS incorrectly handled Base64 decoding. A remote attacker could use this flaw to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-5461) This update refreshes the NSS package to version 3.28.4 which includes the latest CA certificate bundle.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libnss3<2:3.28.4-0ubuntu0.17.04.1
2:3.28.4-0ubuntu0.17.04.1
=17.04
All of
ubuntu/libnss3<2:3.28.4-0ubuntu0.16.10.1
2:3.28.4-0ubuntu0.16.10.1
=16.10
All of
ubuntu/libnss3<2:3.28.4-0ubuntu0.16.04.1
2:3.28.4-0ubuntu0.16.04.1
=16.04
All of
ubuntu/libnss3<2:3.28.4-0ubuntu0.14.04.1
2:3.28.4-0ubuntu0.14.04.1
=14.04

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