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Ubuntu Security Notice USN-2903-2

Ubuntu Security Notice USN-2903-2
Posted Feb 25, 2016
Authored by Ubuntu | Site security.ubuntu.com

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.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2016-1938
SHA-256 | d3283200efa890107e2802a18cd81e5fbdacb3975b6da21cb9ccb7a1f29a4936

Ubuntu Security Notice USN-2903-2

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2903-2
February 23, 2016

nss regression
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 LTS

Summary:

USN-2903-1 introduced a regression in NSS.

Software Description:
- nss: Network Security Service library

Details:

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.

We apologize for the inconvenience.

Original advisory details:

Hanno B=C3=B6ck discovered that NSS incorrectly handled certain division
functions, possibly leading to cryptographic weaknesses. (CVE-2016-1938)
This update also refreshes the NSS package to version 3.21 which includes
the latest CA certificate bundle, and removes the SPI CA.

Update instructions:

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

Ubuntu 12.04 LTS:
libnss3-dev 2:3.21-0ubuntu0.12.04.2

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2903-2
http://www.ubuntu.com/usn/usn-2903-1
https://launchpad.net/bugs/1547147

Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.21-0ubuntu0.12.04.2
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