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AA-2009.0070                  AUSCERT Advisory

                             [Win][UNIX/Linux]
           Mozilla Firefox and SeaMonkey: Execute Arbitrary Code
                         (firefox patch available)
                               30 March 2009
- ---------------------------------------------------------------------------

        AusCERT Advisory Summary
        ------------------------

Product:              Firefox 3.0.7 and prior
                      SeaMonkey 1.1.15
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2009-1044 CVE-2009-1169
Member content until: Monday, April 27 2009

Ref:                  AA-2009.0069

Comment: This update to Firefox was previously slated to be released on
         April 1st, however Mozilla has released the update early.

OVERVIEW:

        Two critical vulnerabilities have been corrected in Firefox 3.0.8.
        Users of 3.0.7 and prior (as well as SeaMonkey), and all users of
        older versions of Firefox should upgrade. [1]


IMPACT:

        The two vulnerabilities are both rated as critical and allow remote
        code execution. [1,2]

        The first vulnerability (MFSA 2009-12) has public exploit code
        available. It will only be a matter of time before exploits using
        this vulnerability are found in the wild. [3]

        The second vulnerability (MFSA 2009-13) is the one used to win the
        2009 CanSecWest Pwn2Own contest. [2]


MITIGATION:

        Users should upgrade to Firefox 3.0.8 available from the Mozilla
        website or using "Check for Updates" from the "Help" menu. [4]

        Currently there is no update for SeaMonkey on their download site.
        When one is released it should be listed on their download site.
        [5]


REFERENCES:

        [1] Mozilla Foundation Security Advisory 2009-12
            http://www.mozilla.org/security/announce/2009/mfsa2009-12.html

        [2] Mozilla Foundation Security Advisory 2009-13
            http://www.mozilla.org/security/announce/2009/mfsa2009-13.html

        [3] http://milw0rm.com/exploits/8285

        [4] Firefox web browser | Faster, more secure, & customizable
            http://www.mozilla.org/en/firefox/

        [5] The SeaMonkey Project
            http://www.seamonkey-project.org/

AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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