Original release date: May 31, 2007

   Last revised: —

   Source: US-CERT

Systems Affected

     * Mozilla Firefox

     * Mozilla Thunderbird

     * Mozilla SeaMonkey

     * Netscape Browser

   Other products based on Mozilla components may also be affected.

Overview

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, Thunderbird, and

   SeaMonkey 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.

   Support for Firefox 1.5 is scheduled to end in June 2007. According to

   Mozilla:

       Firefox 1.5.0.x will be maintained with security and stability

       updates until June 2007. All users are strongly encouraged to

       upgrade to Firefox 2.

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.

III. Solution

Upgrade

   These vulnerabilities are addressed in Mozilla Firefox 2.0.0.4,

   Firefox 1.5.0.12, Thunderbird 2.0.0.4, Thunderbird 1.5.0.12,

   SeaMonkey 1.0.9, SeaMonkey 1.1.2. By default, Mozilla Firefox,

   Thunderbird, and SeaMonkey automatically check for updates.

IV. References

     * US-CERT Vulnerability Notes –

       <http://www.kb.cert.org/vuls/byid?searchview&query=mozilla_20070531>

     * Securing Your Web Browser –

<http://www.us-cert.gov/reading_room/securing_browser/browser_security.html#Mozi

lla_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>

     * Site Controls –

       <http://browser.netscape.com/ns8/help/options-site.jsp>

 ____________________________________________________________________

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

     <http://www.us-cert.gov/cas/techalerts/TA07-151A.html>

 ____________________________________________________________________

   Feedback can be directed to US-CERT Technical Staff. Please send

   email to <cert@cert.org> with “TA07-151A Feedback VU#751636” in the

   subject.

 ____________________________________________________________________

   For instructions on subscribing to or unsubscribing from this

   mailing list, visit <http://www.us-cert.gov/cas/signup.html>.

 ____________________________________________________________________

   Produced 2007 by US-CERT, a government organization.

   Terms of use:

     <http://www.us-cert.gov/legal.html>

 ____________________________________________________________________

Revision History

   May 31, 2007: Initial release

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