TippingPoint Zero Day Initiative

(0day) IBM Lotus Domino iCalendar Meeting Request Parsing Remote Code Execution Vulnerability

ZDI-11-048: February 7th, 2011


CVSS Score

Affected Vendors

Affected Products

    Lotus Domino

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6320. For further product information on the TippingPoint IPS:

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.

Vendor Response

IBM states:


Disclosure Timeline

    2008-08-26 - Vulnerability reported to vendor
    2011-02-07 - Coordinated public release of advisory


This vulnerability was discovered by: