Multiple Vulnerabilities in Mozilla Firefox Could Allow for Arbitrary Code Execution

ITS Advisory Number: 
2016-017
Date(s) Issued: 
Wednesday, January 27, 2016
Subject: 
Multiple Vulnerabilities in Mozilla Firefox Could Allow for Arbitrary Code Execution
Overview: 

Mozilla Firefox is a web browser used to access the Internet. This advisory identifies multiple vulnerabilities in Mozilla Firefox and Firefox ESR, which could allow for arbitrary code execution. Exploitation of these issues can allow an attacker to bypass security restrictions and perform unauthorized actions, obtain sensitive information, bypass same-origin policy restrictions to access data, and execute arbitrary code in the context of the affected application.

Systems Affected: 
  • Mozilla Firefox versions prior to 44
  • Mozilla Firefox ESR versions prior to 38.6
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
High
BUSINESS
Large and medium business entities: 
High
Small business entities: 
High
Home Users: 
High
Description: 

Multiple vulnerabilities were found in Firefox and Firefox ESR. These vulnerabilities could allow for arbitrary code execution in the context of the logged on user or vulnerable application, crash the affected application, disclose sensitive information, bypass the same-origin policy and other security restrictions, and perform unauthorized actions. Details of these vulnerabilities are as follows:

  • CVE-2016-1930, CVE-2016-1931: Multiple memory-corruption vulnerabilities affecting the browser engine.
  • CVE-2016-1933: A denial-of-service vulnerability
  • CVE-2016-1935: A buffer-overflow vulnerability
  • CVE-2015-7208, CVE-2016-1939: A security-bypass in a web server
  • CVE-2016-1940: URL/Address bar spoofing
  • CVE-2016-1937: Unintentional user interactions
  • CVE-2016-1938: Potential cryptographic weaknesses
  • CVE-2016-1941: A security vulnerability affecting OS X installations
  • CVE-2016-1943: CVE-2016-1942: Multiple security-bypass and spoofing by malicious domains
  • CVE-2016-1944: CVE-2016-1945, CVE-2016-1946: Multiple memory manipulation
  • CVE-2016-1947: Disabled reputation service in Firefox version 43
  • CVE-2016-1948: Lightweight themes on Firefox for Android not verifying  secure connection allowing man-in-the-middle (MITM) attacks
Actions: 
  • Apply appropriate updates provided by Mozilla to vulnerable systems, immediately after appropriate testing.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.
References: 

Mozilla:

https://www.mozilla.org/en-US/security/advisories/mfsa2016-01

https://www.mozilla.org/en-US/security/advisories/mfsa2016-02

https://www.mozilla.org/en-US/security/advisories/mfsa2016-03

https://www.mozilla.org/en-US/security/advisories/mfsa2016-04

https://www.mozilla.org/en-US/security/advisories/mfsa2016-05

https://www.mozilla.org/en-US/security/advisories/mfsa2016-06

https://www.mozilla.org/en-US/security/advisories/mfsa2016-07

https://www.mozilla.org/en-US/security/advisories/mfsa2016-08

https://www.mozilla.org/en-US/security/advisories/mfsa2016-09

https://www.mozilla.org/en-US/security/advisories/mfsa2016-10

https://www.mozilla.org/en-US/security/advisories/mfsa2016-11

https://www.mozilla.org/en-US/security/advisories/mfsa2016-12

CVE:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7208

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1930

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1931

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1933

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1935

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1937

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1938

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1939

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1940

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1941

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1942

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1943

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1944

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1945

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1946

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1947

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1948