Firefox releases update to fix severe vulnerability

Share this article:
Firefox late Thursday released an update to its web browser to resolve a major JavaScript vulnerability.

Firefox version 3.5.1 fixes the "critical" flaw, revealed Tuesday by vulnerability tracking firm Secunia and which arises when the browser processes JavaScript code to handle HTML font tags. An exploit could cause a memory corruption buffer overflow, leading to the installation of malware on a compromised system.

Soon after the flaw was disclosed, an exploit based on the Metasploit framework began circulating in the wild, the SANS Internet Storm Center said Tuesday in a blog post.

If the patch cannot be applied immediately, users still running version 3.5 and below can apply a workaround for the vulnerability by disabling the Just-in-Time compiler, used to increase the runtime performance of Java, according to a Mozilla advisory.

More than 20 other minor bugs also were fixed in the update, according to Mozilla. It can be downloaded here.
Share this article:
You must be a registered member of SC Magazine to post a comment.

Sign up to our newsletters

More in News

CryptoWall surpasses CryptoLocker in infection rates

CryptoWall surpasses CryptoLocker in infection rates

A threat analysis from Dell SecureWorks CTU says that CryptoWall has picked up where its famous sibling left off.

Professor says Google search, not hacking, yielded medical info

Professor says Google search, not hacking, yielded medical ...

A professor of ethical hacking at City College San Francisco came forward to clarify that he did not demonstrate hacking a medical center's server in a class.

Syrian Malware Team makes use of enhanced BlackWorm RAT

Syrian Malware Team makes use of enhanced BlackWorm ...

FireEye analyzed the hacking group's use of the malware, dubbed the "Dark Edition" of BlackWorm.