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                        National Cyber Alert System

                Technical Cyber Security Alert TA06-107A


Mozilla Products Contain Multiple Vulnerabilities

   Original release date: April 17, 2006
   Last revised: --
   Source: US-CERT


Systems Affected

     * Mozilla web browser, email and newsgroup client
     * Mozilla SeaMonkey
     * Firefox web browser
     * Thunderbird email client
     * Mozilla Suite

   Any products based on Mozilla components, particularly Gecko may also
   be affected.


Overview

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


I. Description

   Several vulnerabilities have been reported in the Mozilla web browser
   and derived products. More detailed information is available in the
   individual vulnerability notes, including:

   VU#932734 - Mozilla crypto.generateCRMFRequest() vulnerability

   A vulnerability exists in the Mozilla JavaScript routine
   generateCRMFRequest() that may allow a remote attacker to execute
   arbitrary code.
   (CVE-2006-1728)

   VU#968814 - Mozilla JavaScript security bypass vulnerability

   Mozilla products fail to properly enforce security restrictions in
   JavaScript. This vulnerability may allow a remote, unauthenticated
   attacker to execute arbitrary code.
   (CVE-2006-1726)

   VU#179014 - Mozilla CSS integer overflow vulnerability

   Mozilla products contain an integer overflow that could allow a
   remote, unauthenticated attacker to execute arbitrary code.
   (CVE-2006-1730)

   VU#488774 - Mozilla XBL binding vulnerability

   Mozilla products fail to properly restrict access to privileged XBL
   bindings. This vulnerability may allow a remote, unauthenticated
   attacker to execute arbitrary code.
   (CVE-2006-1733)

   VU#842094 - Mozilla JavaScript cloned parent vulnerability

   Mozilla products fail to properly restrict access to a JavaScript
   functions cloned parent. This vulnerability may allow a remote
   attacker to execute arbitrary code on a vulnerable system.
   (CVE-2006-1734)

   VU#813230 - Mozilla products vulnerable to privilege escalation via
   XBL.method.eval

   A vulnerability in the way Mozilla products and derivative programs
   handle certain XBL methods could allow a remote attacker to execute
   arbitrary code on a vulnerable system.
   (CVE-2006-1735)

   VU#736934 - Mozilla products vulnerable to memory corruption via a
   particular sequence of HTML tags

   A vulnerability in the way Mozilla products and derivative programs
   handle certain HTML tags could allow a remote attacker to execute
   arbitrary code on a vulnerable system.
   (CVE-2006-0749)

   VU#935556 - Mozilla products may allow CSS border-rendering code to
   write past the end of an array

   A vulnerability in the way Mozilla products and derivative programs
   handle certain CSS methods could allow a remote attacker to crash the
   application or execute arbitrary code on a vulnerable system.
   (CVE-2006-1739)

   VU#350262 - Mozilla DHTML memory corruption vulnerabilities

   Mozilla products contain to multiple, unspecified vulnerabilities in
   the way they handle DHTML. These vulnerabilities may allow a remote
   attacker to execute arbitrary code or cause a denial-of-service
   condition.
   (CVE-2006-1724)

   VU#252324 - Mozilla display style vulnerability

   Mozilla products contain an unspecified vulnerability in the way they
   handle display styles. This vulnerability may allow a remote attacker
   to execute arbitrary code or cause a denial-of-service condition.

   VU#329500 - Mozilla products vulnerable to memory corruption via large
   regular expression in JavaScript

   A vulnerability in the way the JavaScript engine of Mozilla products
   and derivative programs handles a large regular expression could allow
   a remote attacker to crash the application or execute arbitrary code
   on a vulnerable system.


II. Impact

   The most severe impact of these vulnerabilities could allow a remote
   attacker to execute arbitrary code with the privileges of the user
   running the affected application. Other effects include a denial of
   service or local information disclosure.


III. Solution

Upgrade

   Upgrade to Mozilla Firefox 1.5.0.2, Mozilla Thunderbird 1.5.0.2, or
   SeaMonkey 1.0.1. According to Mozilla.org, Thunderbird 1.5.0.2 is
   to be released on April 18, 2006.

   Users are strongly encourages to apply the workarounds described in
   the individual vulnerability notes until updates can be applied.


Appendix A. References

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

     * Mozilla Foundation Security Advisories -
       <http://www.mozilla.org/projects/security/known-vulnerabilities.ht
       ml>

     * US-CERT Vulnerability Note VU#932734 -
       <http://www.kb.cert.org/vuls/id/932734>

     * US-CERT Vulnerability Note VU#968814 -
       <http://www.kb.cert.org/vuls/id/968814>

     * US-CERT Vulnerability Note VU#179014 -
       <http://www.kb.cert.org/vuls/id/179014>

     * US-CERT Vulnerability Note VU#488774 -
       <http://www.kb.cert.org/vuls/id/488774>

     * US-CERT Vulnerability Note VU#842094 -
       <http://www.kb.cert.org/vuls/id/842094>

     * US-CERT Vulnerability Note VU#813230 -
       <http://www.kb.cert.org/vuls/id/813230>

     * US-CERT Vulnerability Note VU#736934 -
       <http://www.kb.cert.org/vuls/id/736934>

     * US-CERT Vulnerability Note VU#935556 -
       <http://www.kb.cert.org/vuls/id/935556>

     * US-CERT Vulnerability Note VU#350262 -
       <http://www.kb.cert.org/vuls/id/350262>

     * US-CERT Vulnerability Note VU#252324 -
       <http://www.kb.cert.org/vuls/id/252324>

     * US-CERT Vulnerability Note VU#329500 -
       <http://www.kb.cert.org/vuls/id/329500>

     * US-CERT Vulnerability Notes Related to April Mozilla Security
       Advisories -
       <http://www.kb.cert.org/vuls/byid?searchview&query=mozilla_April_2
       006>

     * CVE-2006-1726 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1726>

     * CVE-2006-1728 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1728>

     * CVE-2006-1730 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1730>

     * CVE-2006-1733 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1733>

     * CVE-2006-1734 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1734>

     * CVE-2006-1735 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1735>

     * CVE-2006-0749 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0749>

     * CVE-2006-1739 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1739>

     * CVE-2006-1724 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1724>

     * Firefox - Rediscover the Web - <http://www.mozilla.com/firefox/>

     * Thunderbird - Reclaim your inbox -
       <http://www.mozilla.com/thunderbird/>

     * The SeaMonkey Project -
       <http://www.mozilla.org/projects/seamonkey/>

     * Mozilla Suite - The All-in-One Internet Application Suite -
       <http://www.mozilla.org/products/mozilla1.x/>

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


 ____________________________________________________________________

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

     <http://www.us-cert.gov/cas/techalerts/TA06-107A.html>
 ____________________________________________________________________

   Feedback can be directed to US-CERT Technical Staff. Please send
   email to <cert@cert.org> with "TA06-107A Feedback VU#968814" in the
   subject.
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   Produced 2006 by US-CERT, a government organization.

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Revision History

   Apr 17, 2006: Initial release
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