15 January 2015

Alert Priority High

Users and administrators should apply new security updates to the Mozilla Foundation’s Firefox, Firefox ESR, SeaMonkey and Thunderbird products to protect their computer systems from being compromised.

The Mozilla Foundation has issued the updates to address multiple vulnerabilities in these products. A remote attacker can potentially exploit these vulnerabilities to take control of an affected system, according to US-CERT.

The available updates include:

  • Firefox 35
  • Firefox ESR 31.4
  • SeaMonkey 2.32
  • Thunderbird 31.4

The security advisories are available at Firefox, Firefox ESR, SeaMonkey, and Thunderbird. We recommend you review and apply the updates as quickly as possible.

More information

Stay Smart Online has further information about updating your software.

The US-CERT information is available here.

The information provided here is of a general nature. Everyone's circumstances are different. If you require specific advice you should contact your local technical support provider.


Thank you to those subscribers who have provided feedback to our Alerts and Newsletters. We are very interested in your feedback and where possible take on board your suggestions or requests.


This information has been prepared by Enex TestLab for the Department of Communications ('the Department'). It was accurate and up to date at the time of publishing.

This information is general information only and is intended for use by private individuals and small to medium sized businesses. If you are concerned about a specific cyber security issue you should seek professional advice.

The Commonwealth, Enex TestLab, and all other persons associated with this advisory accept no liability for any damage, loss or expense incurred as a result of the provision of this information, whether by way of negligence or otherwise.

Nothing in this information (including the listing of a person or organisation or links to other web sites) should be taken as an endorsement of a particular product or service.

Please note that third party views or recommendations included in this information do not reflect the views of the Commonwealth, or indicate its commitment to a particular course of action. The Commonwealth also cannot verify the accuracy of any third party material included in this information.


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