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USN-3336-1: NSS vulnerability

21 June 2017

NSS could be made to crash if it received specially crafted network traffic.



  • nss - Network Security Service library


It was discovered that NSS incorrectly handled certain empty SSLv2
messages. A remote attacker could possibly use this issue to cause NSS to
crash, resulting in a denial of service.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.04
Ubuntu 16.10
Ubuntu 16.04
Ubuntu 14.04

After a standard system update you need to restart any applications
that use NSS, such as Evolution and Chromium, to make all the necessary


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