Thursday, July 16, 2009

Mozilla Firefox Memory Corruption Vulnerability

Secunia Logo
Secunia security site has issued an advisory notice that Firefox has a security vulnerability. It affects Firefox 3.5 and i regarded a highly critical. Apparently, it is caused by a Javascript error when dealing with <font> tags and can lead to memory corruption and alow a malicious peron to compromise a user's system.

Set "javascript.options.jit.content" to "false" by opening about:config.

Do not browse untrusted websites or follow untrusted links.

Provided and/or discovered by:
SBerry (Simon Berry-Byrne)

2009-07-15: Updated "Solution" section with temporary workaround information. Added vendor link to the "Original Advisory" section. Added US-CERT link to the "Other References" section.

Original Advisory:


Other References:
US-CERT VU#443060:

Visit for more details and useful information on security threats in general.

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