Mozilla warns of low-risk DoS vulnerability in Firefox 3

Share this article:
Mozilla said Wednesday that it is investigating a new, low-risk vulnerability in its recently released Firefox 3 web browser that could permit an attacker to crash a victim's browser.

The flaw, reported by application delivery solutions provider Radware, could result in a denial-of-service condition if a user is successfully led to the exploit website, the company said in a news release.

The bug is caused by a null pointer dereference error in Firefox's content layout component, according to the Mozilla Security Blog. This means that when an application dereferences a pointer, or a programming language data type that points to an object, it expects it to be valid -- but on a malicious page it would be null.

While Radware says an exploit would lead to the loss of any unsaved information, Mozilla said it includes a feature in Firefox that restores the browser if it crashes, likely resulting in the restoration of any data.

Mozilla said it has assigned a "low" severity rating to the bug and will continue to investigate.

Firefox 3 was released in June.


Share this article:

Sign up to our newsletters

More in News

BlackBerry acquires voice and data encryption firm Secusmart

On Tuesday it was announced that the phonemaker would purchase the voice and data encryption firm.

OTI report exposes economic costs of NSA spying

OTI report exposes economic costs of NSA spying

A report from New America OTI found that the NSA surveillance program has had a chilling effect on U.S. commerce and foreign policy.

Breach index: Encryption used in 23 percent of Q2 incidents

Breach index: Encryption used in 23 percent of ...

Out of the 237 disclosed data breaches last quarter, encryption was used in only 10 instances.