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             AUSCERT External Security Bulletin Redistribution

         SCO Openserver IMAP Daemon Long Verb Parsing Remote Code
                          Execution Vulnerability
                              8 February 2011


        AusCERT Security Bulletin Summary

Product:           SCO OpenServer IMAP daemon
Publisher:         Zero Day Initiative
Operating System:  SCO
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        None

Original Bulletin: 

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SCO Openserver IMAP Daemon Long Verb Parsing Remote Code Execution

   ZDI-11-058: February 7th, 2011

CVSS Score

   10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

Affected Vendors


Affected Products


TippingPoint(TM) IPS Customer Protection

   TippingPoint IPS customers are protected against this vulnerability by
   Digital Vaccine protection filter ID 6535. For further product
   information on the TippingPoint IPS:

Vulnerability Details

   This vulnerability allows remote attackers to execute arbitrary code
   on vulnerable installations of the SCO OpenServer IMAP daemon.
   Authentication is not required to exploit this vulnerability.

   The specific flaw exists within the imapd process responsible for
   handling remote IMAP requests. The process does not properly validate
   IMAP commands and arguments. Supplying an overly long command followed
   by an invalid argument can cause an exploitable overflow to occur.
   This vulnerability can be leveraged to execute arbitrary code.

Vendor Response

   SCO states:

Disclosure Timeline

   2008-11-10 - Vulnerability reported to vendor
   2011-02-07 - Coordinated public release of advisory


   This vulnerability was discovered by:

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