N/A - USN-3111-1

Executive Summary

Summary
Title	Firefox vulnerabilities

Informations
Name	USN-3111-1	First vendor Publication	2016-10-27
Vendor	Ubuntu	Last vendor Modification	2016-10-27
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	N/A	Attack Range	N/A
Cvss Impact Score	N/A	Attack Complexity	N/A
Cvss Expoit Score	N/A	Authentication	N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 16.10 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in Firefox.

Software Description: - firefox: Mozilla Open Source web browser

Details:

A use-after-free was discovered in service workers. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via program crash, or execute arbitrary code. (CVE-2016-5287)

It was discovered that web content could access information in the HTTP cache in some circumstances. An attacker could potentially exploit this to obtain sensitive information. (CVE-2016-5288)

Update instructions:

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

Ubuntu 16.10:
firefox 49.0.2+build2-0ubuntu0.16.10.2

Ubuntu 16.04 LTS:
firefox 49.0.2+build2-0ubuntu0.16.04.2

Ubuntu 14.04 LTS:
firefox 49.0.2+build2-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
firefox 49.0.2+build2-0ubuntu0.12.04.1

After a standard system update you need to restart Firefox to make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-3111-1
CVE-2016-5287, CVE-2016-5288

Package Information:
https://launchpad.net/ubuntu/+source/firefox/49.0.2+build2-0ubuntu0.16.10.2
https://launchpad.net/ubuntu/+source/firefox/49.0.2+build2-0ubuntu0.16.04.2
https://launchpad.net/ubuntu/+source/firefox/49.0.2+build2-0ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/firefox/49.0.2+build2-0ubuntu0.12.04.1