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AusCERT Update AU-2007.0008 - [Win][UNIX/Linux]
Firefox 2.0.0.1 and 1.5.0.9 additional vulnerability allows remote compromise
8 March 2007

        AusCERT Update Summary
        ----------------------

Product:              Firefox 2.0.0.1
                      Firefox 1.5.0.9
                      SeaMonkey 1.1.0
                      SeaMonkey 1.0.7
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-0994
Member content until: Thursday, April 05 2007

Ref:                  AL-2007.0028

OVERVIEW:

	Another vulnerability has been disclosed affecting the previous 
	versions of Firefox (2.0.0.1 and 1.5.0.9), in addition to the 
	twelve vulnerabilities previously reported in AL-2007.0028. 

	In this case, the vulnerability can not be removed by turning off 
	JavaScript.


IMPACT:

	A remote attacker may compromise the user's computer when the user 
	visits a malicious web page, executing arbitrary code with the 
	privileges of that user.


MITIGATION:

	This vulnerability is fixed in Firefox 2.0.0.2, Firefox 1.5.0.10, 
	SeaMonkey 1.1.1 and SeaMonkey 1.0.8. 


DETAILS:

	When an earlier img.src vulnerability (CVE-2006-6503) was fixed in
	Firefox 2.0.0.1 and 1.5.0.9, the code introduced a new vulnerability
	allowing execution of arbitrary code where the src attribute of an
	img tag is set to a specially crafted "javascript:" URI.
	
	In addition, this execution will occur even if JavaScript is disabled
	in the global preferences. Thunderbird is not affected.


REFERENCES:

	[1] Mozilla Foundation Security Advisory 2007-09
	    http://www.mozilla.org/security/announce/2007/mfsa2007-09.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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