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ZDI-09-010: Novell Netware Groupwise GWIA RCPT Command Buffer Overflow Vulnerability

ZDI-09-010: Novell Netware Groupwise GWIA RCPT Command Buffer Overflow 
February 2, 2009

-- Affected Vendors:

-- Affected Products:
Novell Netware

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 1047. 
For further product information on the TippingPoint IPS, visit:


-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Novell Netware Groupwise SMTP daemon.
Authentication is not required to exploit this vulnerability.

The specific flaw exists during the parsing of malformed RCPT verb
arguments to the SMTP daemon. When an overly long e-mail address is
received an off-by-one condition is triggered which minimally will cause
a denial of service and can result in arbitrary code execution.

-- Vendor Response:
Novell has issued an update to correct this vulnerability. More 
details can be found at:


-- Disclosure Timeline:
2008-08-26 - Vulnerability reported to vendor
2009-02-02 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Nick DeBaggis

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