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ASB-2009.1050.2 - UPDATE [Win][UNIX/Linux] SquirrelMail: Cross-site request forgery - Remote with user interaction

Date: 26 August 2009
References: ESB-2009.1384  ESB-2010.0732  
Related Files: ASB-2009.1050  

Click here for printable version
Click here for PGP verifiable version
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                         AUSCERT Security Bulletin

                              ASB-2009.1050.2
           Forms in SquirrelMail are susceptible to CSRF attacks
                              26 August 2009

===========================================================================

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

Product:              SquirrelMail 1.4.19 and prior
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact/Access:        Cross-site Request Forgery -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2009-2964  
Member content until: Wednesday, September 16 2009

Revision History:     August 26 2009: Added CVE Reference
                      August 17 2009: Initial Release

OVERVIEW

        All form submission pages in SquirrelMail 1.4.19 and prior are
        vulnerable to cross-site request forgery attacks [1].


IMPACT

        If a user of SquirrelMail were to visit a malicious website an
        attacker could modify that user's SquirrelMail preferences and possibly
        send email as that user.


MITIGATION

        SquirrelMail has released a patch implementing a security token system
        that mitigates this vulnerability [1].


REFERENCES

        [1] SquirrelMail Security - CSRF in all forms
            http://www.squirrelmail.org/security/issue/2009-08-12

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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