Technical Description

Several vulnerabilities were identified in Mozilla Suite, Firefox and Thunderbird, which may be exploited by attackers to execute arbitrary commands or bypass certain security features.

- The first vulnerability is due to a heap overrun error when processing a Netscape-specific extension block in GIF images, which may be exploited to run arbitrary code on a vulnerable system via a web page or email message containing a specially crafted GIF image.

- The second flaw occurs if a user bookmarked a specially crafted page as a Firefox sidebar panel, which could be exploited to execute arbitrary programs by opening a privileged page and injecting javascript into it.

- The third issue occurs when handling specially crafted XUL files, and may be exploited to bypass the restriction on opening privileged XUL.

Affected Products

Mozilla Firefox version 1.0.1 and prior
Mozilla Suite version 1.7.5 and prior
Mozilla Thunderbird version 1.0.1 and prior

Solution

Mozilla Firefox version 1.0.2
Mozilla Suite version 1.7.6
Mozilla Thunderbird version 1.0.2

References

http://www.vupen.com/english/advisories/2005/0296
https://bugzilla.mozilla.org/show_bug.cgi?id=284627
https://bugzilla.mozilla.org/show_bug.cgi?id=285595
https://bugzilla.mozilla.org/show_bug.cgi?id=285438

Credits

Vulnerabilities reported by Mark Dowd, Kohei Yoshino and Michael Krax.

ChangeLog

2005-03-23 : Initial release

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