# MA-549.122015: MyCERT Advisory - Mozilla Releases Security Updates for Firefox and Firefox ESR

**Date:** 16 Dec 2015  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-549.122015  
**Advisory ID:** MA-549.122015

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#### **1.0 Introduction**
The Mozilla Foundation has released security updates to address vulnerabilities in Firefox, and Firefox ESR. Mozilla encourages users and administrators to review Mozilla's Security Updates and apply the necessary updates.
**2.0 Impact**
These updates address vulnerabilities that could potentially allow an attacker to take control of an affected system.
**3.0 Affected Products**
The detail lists of the Mozilla products updates are as below:
•    Firefox 43
•    Firefox ESR 38.5
**4.0 Recommendation**
MyCERT highly recommended users of these applications to upgrade to the latest version of the affected products. The following updates are available:
4.1 Mozilla Firefox 43
Advisories can be referred at:
<https://www.mozilla.org/en-GB/security/known-vulnerabilities/firefox/>
Can be downloaded at:
<https://www.mozilla.org/en-GB/firefox/new/>
4.2 Mozilla Firefox ESR 38.5
Advisories can be referred at:
<https://www.mozilla.org/en-GB/security/known-vulnerabilities/firefox-esr/>
Can be downloaded at:
<https://www.mozilla.org/en-US/firefox/organizations/all/>
Generally, MyCERT advises the users of this software to be updated with the latest security announcements by the vendor and follow best practice security policies to determine which updates should be applied.
For further enquiries, please contact MyCERT through the following channels:
E-mail : [[email protected]](/cdn-cgi/l/email-protection#c9aab0abacbbf0f0f089aab0abacbbbaacaabcbba0bdb0e7a4b0) or [[email protected]](/cdn-cgi/l/email-protection#b3decad0d6c1c7f3decad0d6c1c79ddcc1d49ddeca)
Phone : 1-300-88-2999 (monitored during business hours)
Fax : +603 89453442
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**5.0 References**
•    Mozilla Releases Security Updates for Firefox, and Firefox ESR:
<https://www.us-cert.gov/ncas/current-activity/2015/12/15/Mozilla-Releases-Security-Updates-Firefox-and-Firefox-ESR>
•    Mozilla Foundation Security Advisories
<https://www.mozilla.org/en-US/security/advisories/>