# MA-423.102014: MyCERT Advisory - Mozilla release Security Updates for Firefox and Thunderbird

**Date:** 20 Oct 2014  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-423.102014  
**Advisory ID:** MA-423.102014

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**1.0 Introduction**
The Mozilla Foundation has released security updates to address multiple vulnerabilities in Firefox and Thunderbird. Mozilla users are encourages reviewing the Security Advisories for those Mozilla vulnerabilities products (Firefox, Firefox ESR and Thunderbird) to determine which updates should be applied to mitigate these risks.
**2.0 Impact**
Exploitation of these vulnerabilities may allow an attacker to obtain sensitive information, bypass same-origin policy and key pinning, cause an exploitable crash, conduct a man-in-the-middle attack, or execute arbitrary code.
**3.0 Affected Products**
The detail lists of the Mozilla products updates are as below:
- Firefox 33
- Firefox ESR 31.2
- Thunderbird 31.2
**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 33**
Advisories can be referred at:
<https://www.mozilla.org/security/known-vulnerabilities/firefox.html>
Can be downloaded at:
<https://www.mozilla.org/en-GB/firefox/new/>
**4.2 Mozilla Firefox ESR 31.2**
Advisories can be referred at:
<https://www.mozilla.org/security/known-vulnerabilities/firefoxESR.html>
Can be downloaded at:
<https://www.mozilla.org/en-US/firefox/organizations/all/>
**4.3 Mozilla Thunderbird 31.2**
Advisories can be referred at:
<https://www.mozilla.org/security/known-vulnerabilities/thunderbird.html>
Can be downloaded at:
<https://www.mozilla.org/en-GB/thunderbird/>
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) or [[email protected]](/cdn-cgi/l/email-protection)
Phone : 1-300-88-2999 (monitored during business hours)
Fax : +603 89453442
Handphone : +60 19 2665850 (24x7 call incident reporting)
SMS : CYBER999 REPORT EMAIL COMPLAINT to 15888
Business Hours : Mon - Fri 09:00 AM - 18:00 PM MYT
Web : <https://www.mycert.org.my>
Twitter : <http://www.twitter.com/mycert>
**5.0     References**
- **Mozilla Releases Security Updates for Firefox and Thunderbird** <https://www.us-cert.gov/ncas/current-activity/2014/10/15/Mozilla-Releases-Security-Updates-Firefox-and-Thunderbird>
- **Mozilla Foundation Security Advisories** <https://www.mozilla.org/security/announce/>
- **Mozilla Releases Security Updates for Firefox and Thunderbird** <http://baileystechrepair.wordpress.com/2014/10/15/mozilla-releases-security-updates-for-firefox-and-thunderbird/>