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     National Cyber Alert System
   
Technical Cyber Security Alert TA08-087A


Mozilla Updates for Multiple Vulnerabilities

   Original release date: March 27, 2008
   Last revised: --
   Source: US-CERT

Systems Affected

     * Mozilla Firefox
     * Mozilla Thunderbird
     * Mozilla SeaMonkey

   Other products based on Mozilla components may also be affected.

Overview

   New  versions  of  Firefox, Thunderbird, and SeaMonkey address several
   vulnerabilities,  the  most  severe  of  which  could  allow  a remote
   attacker to execute arbitrary code on an affected system.

I. Description

   The  Mozilla  and the SeaMonkey projects have released new versions of
   Firefox, Thunderbird and SeaMonkey to address several vulnerabilities.
   Further  details  about these vulnerabilities are available in Mozilla
   Foundation  Security  Advisories 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 execute cross-site scripting attacks.

III. Solution

Upgrade

   These  vulnerabilities  are  addressed  in  Mozilla  Firefox 2.0.0.13,
   Thunderbird 2.0.0.13, and SeaMonkey 1.1.9.

Disable JavaScript

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

IV. References

 * US-CERT Vulnerability Notes -
   <http://www.kb.cert.org/vuls/byid?searchview&query=mozilla_200803>
     
 * 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/TA08-087A.html>
 _________________________________________________________________

  Feedback can be directed to US-CERT Technical Staff. Please send
  email to <cert@cert.org> with "TA08-087A Feedback VU#466521" in the
  subject.
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  For instructions on subscribing to or unsubscribing from this
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  Produced 2008 by US-CERT, a government organization.

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

   Revision History

   March 27, 2008: Initial release
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