Mozilla fails to properly handle simultaneous XPCOM events

Overview

Mozilla products are vulnerable to memory corruption via simultaneous XPCOM events. This may allow a remote attacker to execute arbitrary code on a vulnerable system.

Description

XPCOM

XPCOM is a cross-platform component object model similar to Microsoft COM or CORBA. XPCOM provides the following features to software developers:

* Component management
* File abstraction
* Object message passing
* Memory Management

The problem

XPCOM events that occur simultaneously can trigger the use of a deleted timer object, which can cause memory corruption.

Impact

A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. The attacker could also cause the vulnerable application to crash.

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Solution

Apply an update
This vulnerability is addressed in Firefox 1.5.0.5, Thunderbird 1.5.0.5, and SeaMonkey 1.0.3 according to the Mozilla Foundation Security Update 2006-46.

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Disable JavaScript

This vulnerability can be mitigated by disabling JavaScript.

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Vendor Information

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Mozilla, Inc. __ Affected

Updated: July 27, 2006

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Please see Mozilla Foundation Security Advisory 2006-46.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23239124 Feedback>).

America Online, Inc. Unknown

Notified: July 31, 2006 Updated: July 31, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Netscape Communications Corporation Unknown

Notified: July 31, 2006 Updated: July 31, 2006

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://www.mozilla.org/security/announce/2006/mfsa2006-46.html&gt;
• <https://bugzilla.mozilla.org/show_bug.cgi?id=342507&gt;
• <https://bugzilla.mozilla.org/show_bug.cgi?id=320982&gt;
• <http://secunia.com/advisories/19873/&gt;
• <http://secunia.com/advisories/21216/&gt;
• <http://secunia.com/secunia_research/2006-53/&gt;
• <https://issues.rpath.com/browse/RPL-537&gt;
• <http://www.securityfocus.com/bid/19181&gt;

Acknowledgements

This vulnerability was reported by the Mozilla Foundation, who in turn credit Secunia Research.

This document was written by Will Dormann.

Other Information

CVE IDs:	CVE-2006-3113
Severity Metric:	7.83 Date Public: