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

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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.

Overview

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

Upgrade

These vulnerabilities are addressed in Mozilla Firefox 2.0.0.5 and
Thunderbird 2.0.0.5.

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 -
<http://www.kb.cert.org/vuls/byid?searchview&query=mozilla_20070717>

* Securing Your Web Browser -
<http://www.us-cert.gov/reading_room/securing_browser/browser_security.html#Mozilla_Firefox>

* Mozilla Foundation Security Advisories - <http://www.mozilla.org/security/announce/>

* Known Vulnerabilities in Mozilla Products -
<http://www.mozilla.org/projects/security/known-vulnerabilities.html>

* Mozilla Hall of Fame - <http://www.mozilla.org/university/HOF.html>

* NoScript Firefox Extension - <http://noscript.net/>

_________________________________________________________________

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

<http://www.us-cert.gov/cas/techalerts/TA07-199A.html>
_________________________________________________________________

Feedback can be directed to US-CERT Technical Staff. Please send
email to <cert@cert.org> with "TA07-199A Feedback VU#143297" in the
subject.
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For instructions on subscribing to or unsubscribing from this
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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
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