A number of memory corruption vulnerabilities have been found in the Mozilla application which may allow a remote user who is able to create a web page which is visited by a local user using the Mozilla browser, or who sends a specially crafted email that is read by a local user using Mozilla, to either cause the Mozilla application to crash or execute arbitrary code via Javascript with the privileges of the user running Mozilla. The ability of a remote user to cause the Mozilla application to crash is a type of Denial of Service (DoS).

The following Mozilla advisory describes nine separate memory corruption issues:

• http://www.mozilla.org/security/announce/mfsa2006-55.html

This Sun Alert corresponds to the following five issues described in the Mozilla advisory above:

FireMenuItemActiveEvent called at unsafe times (Boris Zbarsky):

• https://bugzilla.mozilla.org/show_bug.cgi?id=336162

Potential string class buffer overruns in out-of-memory case (Darin Fisher, Daniel Veditz):

• https://bugzilla.mozilla.org/show_bug.cgi?id=284219

Crashes involving table row and column groups (Jesse Ruderman, Martijn Wargers):

• https://bugzilla.mozilla.org/show_bug.cgi?id=331679
• https://bugzilla.mozilla.org/show_bug.cgi?id=329900

crypto.generateCRMFRequest callback can run on deleted context (shutdown):

• https://bugzilla.mozilla.org/show_bug.cgi?id=337462

Note: Mozilla 1.7 is not affected by the below vulnerabilities mentioned in the advisory:

Crashes referencing removed nodes (Jesse Ruderman, Martijn Wargers):

• https://bugzilla.mozilla.org/show_bug.cgi?id=338391
• https://bugzilla.mozilla.org/show_bug.cgi?id=340733

Additional references:

• http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3811
• http://www.kb.cert.org/vuls/id/527676
• http://www.us-cert.gov/cas/techalerts/TA06-208A.html

These issues can occur in the following releases:

SPARC Platform

• Mozilla 1.7 (for Solaris 8 and 9) without patch 120671-06
• Mozilla 1.7 (for Solaris 10) without patch 119115-30

x86 Platform

• Mozilla 1.7 (for Solaris 8 and 9) without patch 120672-06
• Mozilla 1.7 (for Solaris 10) without patch 119116-30

Note: Mozilla 1.4 may be vulnerable to one or more of these security issues. Customers are advised to upgrade to Mozilla 1.7 to get the security fixes once they are available.

To determine the version of Mozilla on a Solaris system, the following command can be run:

    % /usr/sfw/bin/mozilla -version
    Mozilla 1.7, (Sun Java Desktop System), build 2005031721

There are no predictable symptoms that would indicate the described issues have been exploited.

Some of the memory corruption vulnerabilities may be mitigated by disabling Javascript:

1. Open the "Preferences" dialog from the Edit menu
2. Select the "Advanced" tree
3. Select the "Scripts & Plug-ins" leaf
4. Uncheck the "Navigator and Mail & Newsgroups" check boxes
5. Click the "OK" button

This issue is addressed in the following releases:

SPARC Platform

• Mozilla 1.7 (for Solaris 8 and 9) with patch 120671-06 or later
• Mozilla 1.7 (for Solaris 10) with patch 119115-30 or later

x86 Platform

• Mozilla 1.7 (for Solaris 8 and 9) with patch 120672-06 or later
• Mozilla 1.7 (for Solaris 10) with patch 119116-30 or later

• Updated Contributing Factors and Resolution sections

• State: Resolved
• Updated Contributing Factors and Relief/Workaround sections

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