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 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 ten separate memory corruption issues:

• http://www.mozilla.org/security/announce/mfsa2006-32.html

This Sun Alert corresponds to four of the issues described in the Mozilla advisory above:

Memory corruption involving BoxObjects (Neil Rashbrook):

• https://bugzilla.mozilla.org/show_bug.cgi?id=329219

Memory corruption involving BoxObjects (Boris Zbarsky):

• https://bugzilla.mozilla.org/show_bug.cgi?id=326931

Potential integer overflow in jsstr tagify (Georgi Guninski):

• https://bugzilla.mozilla.org/show_bug.cgi?id=335535

Content-implemented tree views can corrupt memory (Boris Zbarsky):

• https://bugzilla.mozilla.org/show_bug.cgi?id=326501

Additional references:

CVE-2006-2779 describes nine of the ten issues documented in Mozilla advisory MFSA 2006-32 which includes the above issues 329219, 326931, and 326501.

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=2006-2779

CVE-2006-2780 describes the tenth issue documented in Mozilla advisory MFSA 2006-32, the integer overflow in the jsstr tagify, 335535.

• http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2780

CERT VU#466673 references all ten issues described in Mozilla advisory MFSA 2006-32.

• http://www.kb.cert.org/vuls/id/466673

This issue 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 119115-28

x86 Platform

• Mozilla 1.7 (for Solaris 8 and 9) without patch 120672-06
• Mozilla 1.7 (for Solaris 10) without patch 119116-28

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 these security fixes.

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

The Mozilla browser may exit unexpectedly if these issues were exploited to cause a Denial of Service. There are no predictable symptoms that would indicate the described issues have been exploited to execute arbitrary code.

To work around the issues described in this Sun Alert, disable JavaScript by doing the following:

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 119115-28 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 119116-28 or later

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