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             AUSCERT External Security Bulletin Redistribution

          ESB-2005.0075 -- Three vulnerabilities in SquirrelMail
                              25 January 2005

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           SquirrelMail 1.4.4-RC1 and prior
Operating System:  UNIX variants
                   Linux variants
                   Windows
Impact:            Execute Arbitrary Code/Commands
Access:            Remote/Unauthenticated


PROBLEMS:  

	1. An input validation error in webmail.php allows a remote attacker to
	   perform a cross-site scripting attack, executing arbitrary script
	   code in a user's browser in the context of the SquirrelMail site.


	2. Incorrect input validation in webmail.php allows an attacker to
	   display arbitrary remote web pages in SquirrelMail's frameset.
	   

	3. Incorrect input validation in prefs.php allows an attacker to 
	   include any code from the local system into the SquirrelMail code.

	   Squirrelmail is only vulnerable to this third vulnerability 
	   if register_globals is set to On, which is not the default.


MITIGATION: 

	SquirrelMail 1.4.4 has been released fixing these three vulnerabilities.


REFERENCES:
	
	The original SquirrelMail announcement is available at:
	http://sourceforge.net/mailarchive/forum.php?thread_id=6403518&forum_id=1988


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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