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A  U  S  C  E  R  T                                           A  L  E  R  T

                       AL-2006.0032 -- AUSCERT ALERT
                             [Win][UNIX/Linux]
           Firefox vulnerability may allow remote code execution
                                4 May 2006

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        AusCERT Alert Summary
        ---------------------

Product:           Firefox 1.5 to 1.5.0.2
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact:            Execute Arbitrary Code/Commands
                   Denial of Service
Access:            Remote/Unauthenticated
CVE Names:         CVE-2006-1993

OVERVIEW:

        Mozilla Firefox contains a vulnerability that may allow a remote 
        attacker to execute arbitrary code or create a denial of service
        condition.


IMPACT:

        An attacker may be able to execute arbitrary code by convincing a user
        to visit a specially crafted web site employing the 
        contentWindow.focus() method [1].


MITIGATION:

        * Update Firefox to version 1.5.0.3 [2].

        * The Mozilla Foundation advises [3] that JavaScript may be disabled as
          a temporary workaround.


REFERENCES:

        [1] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1993
        [2] http://www.mozilla.com/firefox/releases/1.5.0.3.html
        [3] http://www.mozilla.org/security/announce/2006/mfsa2006-30.html

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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