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AA-2009.0003                  AUSCERT Advisory

                             [Win][UNIX/Linux]
                Denial of Service vulnerabilitiy in UW IMAP
                              5 January 2009
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        AusCERT Advisory Summary
        ------------------------

Product:              UW IMAP
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact:               Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-5514
Member content until: Monday, February 02 2009

OVERVIEW:

       A security vulnerability has been reported in UW IMAP.


IMPACT:

       The vendor has provided the following information regarding this
       vulnerability:

       "imap-2007e is a maintenance release, consisting primarily of 
       bugfixes to problems discovered in the release that affected a small 
       number of users plus a security fix for users of the RFC822BUFFER 
       routines." [1]

       The National Vulnerability Database [2] has assigned CVE-2008-5514
       to this vulnerability:

       CVE-2008-5514: Off-by-one error in the rfc822_output_char function in 
       the RFC822BUFFER routines in the University of Washington (UW) 
       c-client library, as used by the UW IMAP toolkit before imap-2007e 
       and other applications, allows context-dependent attackers to cause a 
       denial of service (crash) via an e-mail message that triggers a buffer 
       overflow. [3]


MITIGATION:

       The University of Washington have released imap-2007e to correct this
       vulnerability.


REFERENCES:

       [1] UW IMAP Server Documentation
           http://www.washington.edu/imap/documentation/RELNOTES.html
       
       [2] National Vulnerability Database
           http://nvd.nist.gov

       [3] Vulnerability Summary for CVE-2008-5514 
           http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2008-5514

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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