US-CERT Technical Cyber Security Alert TA07-199A -- Mozilla Updates for Multiple Vulnerabilities

Type securityvulns
Reporter Securityvulns
Modified 2007-07-19T00:00:00



                    National Cyber Alert System

            Technical Cyber Security Alert TA07-199A

Mozilla Updates for Multiple Vulnerabilities

Original release date: July 18, 2007 Last revised: -- Source: US-CERT

Systems Affected

 * Mozilla Firefox
 * Mozilla Thunderbird

Other products based on Mozilla components may also be affected.


The Mozilla web browser and derived products contain several vulnerabilities, the most severe of which could allow a remote attacker to execute arbitrary code on an affected system.

I. Description

Mozilla has released new versions of Firefox and Thunderbird to address several vulnerabilities. Further details about these vulnerabilities are available from Mozilla and the Vulnerability Notes Database. An attacker could exploit these vulnerabilities by convincing a user to view a specially-crafted HTML document, such as a web page or an HTML email message.

II. Impact

While the impacts of the individual vulnerabilities vary, the most severe could allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. An attacker may also be able to cause a denial of service or obtain private information.

III. Solution


These vulnerabilities are addressed in Mozilla Firefox and Thunderbird

Disable JavaScript

Some of these vulnerabilities can be mitigated by disabling JavaScript or using the NoScript extension. For more information about configuring Firefox, please see the Securing Your Web Browser document. Thunderbird disables JavaScript and Java by default.

IV. References

 * US-CERT Vulnerability Notes -

 * Securing Your Web Browser -

 * Mozilla Foundation Security Advisories - <>

 * Known Vulnerabilities in Mozilla Products -

 * Mozilla Hall of Fame - <>

 * NoScript Firefox Extension - <>

The most recent version of this document can be found at:


Feedback can be directed to US-CERT Technical Staff. Please send email to <> with "TA07-199A Feedback VU#143297" in the subject.

For instructions on subscribing to or unsubscribing from this mailing list, visit <>

Produced 2007 by US-CERT, a government organization.

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Produced 2007 by US-CERT, a government organization. Terms of use

Revision History

July 18, 2007: Initial release -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux)

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