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Mozilla JavaScript engine contains multiple integer overflows

Vulnerability Note VU#655892

Original Release Date: 2006-07-27 | Last Revised: 2007-02-09


The Mozilla JavaScript engine contains multiple integer overflows. This vulnerability may allow a remote attacker to execute arbitrary code on a vulnerable system.


Mozilla products that use the Mozilla JavaScript engine are vulnerable to integer overflows. Specifically, the JavaScript toSource() fails to properly handle malformed strings.

For more information and a complete list of affected products refer to Mozilla Foundation Security Advisory 2006-50.


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.


Apply an update
This vulnerability is addressed in Firefox, Thunderbird, and SeaMonkey 1.0.3 according to the Mozilla Foundation Security Update 2006-50.

Disable JavaScript

This vulnerability can be mitigated by disabling JavaScript.

Vendor Information

Affected   Unknown   Unaffected

Mozilla, Inc.

Updated:  July 27, 2006



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

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


Refer to

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A



This vulnerability was reported in Mozilla Foundation Security Advisory 2006-50. Mozilla credits Georgi Guninski with reporting this vulnerability.

This document was written by Jeff Gennari.

Other Information

CVE IDs: CVE-2006-3806
Severity Metric: 19.24
Date Public: 2006-07-25
Date First Published: 2006-07-27
Date Last Updated: 2007-02-09 14:03 UTC
Document Revision: 11

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