ZDI-11-048: IBM Lotus Domino iCalendar Meeting Request Parsing Remote Code Execution Vulnerability

[ZDI Disclosures <zdi-disclosures@xxxxxxxxxxxxxxxx>]

ZDI-11-048: IBM Lotus Domino iCalendar Meeting Request Parsing Remote Code 
Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-048

February 7, 2011 - This vulnerability is being disclosed publicly without a 
patch in accordance with the ZDI 180 day deadline. To view mitigations for this 
vulnerability please see: 
http://dvlabs.tippingpoint.com/blog/2011/02/07/zdi-disclosure-ibm

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

-- Affected Vendors:
IBM

-- Affected Products:
IBM Lotus Domino

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 6320. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
systems with vulnerable installations of IBM Lotus Domino.
Authentication is not required to exploit this vulnerability.

The specific flaw exists within the nrouter.exe service while processing
a malformed calendar meeting request. The process copies the contents of
the name parameter within the Content-Type header into a fixed size
stack buffer. By providing enough data this buffer can overflow leading
to arbitrary code execution under the context of the SYSTEM user.

-- Disclosure Timeline:
2008-08-26 - Vulnerability reported to vendor
2011-02-07 - Public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Anonymous

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