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Mozilla contains a buffer overflow vulnerability in crypto.signText()

Vulnerability Note VU#421529

Original Release Date: 2006-06-02 | Last Revised: 2007-02-09


Mozilla products contain a buffer overflow in the crypto.signText() method. This may allow a remote attacker to execute arbitrary code.



JavaScript contains a crypto.signText() method, which allows the user to digitally sign a text string.

The problem

The Mozilla crypto.signText() method contains a buffer overflow. Mozilla Firefox and Thunderbird are reported to be vulnerable.


By convincing a user to view a specially crafted HTML document (e.g., a web page, an HTML email message, or an HTML email attachment), an attacker may be able to execute arbitrary code with the privileges of the user.


Apply an update
Refer to Mozilla Foundation Security Advisory 2006-38 for fixed versions of Mozilla products.

Disable JavaScript

This vulnerability can be mitigated by disabling JavaScript.

Vendor Information

Affected   Unknown   Unaffected

Mozilla, Inc.

Updated:  June 02, 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.


Please refer to Mozilla Foundation Security Advisory 2006-38.

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



Thanks to the Mozilla Foundation Security Advisory for reporting this vulnerability, who in turn credit Mikolaj J. Habryn.

This document was written by Will Dormann.

Other Information

CVE IDs: CVE-2006-2778
Severity Metric: 10.33
Date Public: 2006-06-01
Date First Published: 2006-06-02
Date Last Updated: 2007-02-09 14:34 UTC
Document Revision: 17

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