Ubuntu Security Notice 2903-2 – USN-2903-1 fixed a vulnerability in NSS. An incorrect package versioning change in Ubuntu 12.04 LTS caused a regression when building software against NSS. This update fixes the problem. Hanno Boeck discovered that NSS incorrectly handled certain division functions, possibly leading to cryptographic weaknesses. This update also refreshes the NSS package to version 3.21 which includes the latest CA certificate bundle, and removes the SPI CA. Various other issues were also addressed.