N/A - USN-2063-1

Executive Summary

Summary
Title	NSS vulnerability

Informations
Name	USN-2063-1	First vendor Publication	2013-12-20
Vendor	Ubuntu	Last vendor Modification	2013-12-20
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	Not Defined	Attack Range	Not Defined
Cvss Impact Score	Not Defined	Attack Complexity	Not Defined
Cvss Expoit Score	Not Defined	Authentication	Not Defined
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 13.10 - Ubuntu 13.04 - Ubuntu 12.10 - Ubuntu 12.04 LTS - Ubuntu 10.04 LTS

Summary:

Fraudulent security certificates could allow sensitive information to be exposed when accessing the Internet.

Software Description: - nss: Network Security Service library

Details:

It was discovered that an intermediate certificate was incorrectly issued by a subordinate certificate authority of a trusted CA included in NSS. This intermediate certificate could be used in a man-in-the-middle attack, and has such been marked as untrusted in this update.

Update instructions:

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

Ubuntu 13.10:
libnss3 2:3.15.3.1-0ubuntu0.13.10.1

Ubuntu 13.04:
libnss3 2:3.15.3.1-0ubuntu0.13.04.1

Ubuntu 12.10:
libnss3 3.15.3.1-0ubuntu0.12.10.1

Ubuntu 12.04 LTS:
libnss3 3.15.3.1-0ubuntu0.12.04.1

Ubuntu 10.04 LTS:
libnss3-1d 3.15.3.1-0ubuntu0.10.04.1

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

References:
http://www.ubuntu.com/usn/usn-2063-1
https://launchpad.net/bugs/1263135

Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.15.3.1-0ubuntu0.13.10.1
https://launchpad.net/ubuntu/+source/nss/2:3.15.3.1-0ubuntu0.13.04.1
https://launchpad.net/ubuntu/+source/nss/3.15.3.1-0ubuntu0.12.10.1
https://launchpad.net/ubuntu/+source/nss/3.15.3.1-0ubuntu0.12.04.1
https://launchpad.net/ubuntu/+source/nss/3.15.3.1-0ubuntu0.10.04.1