TippingPoint Zero Day Initiative

Ipswitch Collaboration Suite SMTP Server Stack Overflow Vulnerability

ZDI-06-028: September 8th, 2006


Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 4496. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Ipswitch Collaboration Suite and IMail. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the SMTP daemon. A lack of bounds checking during the parsing of long strings contained within the characters '@' and ':' leads to a stack overflow vulnerability. Exploitation can result in code execution or a denial of service.

Vendor Response

Ipswitch has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2006-06-22 - Vulnerability reported to vendor
    2006-09-08 - Coordinated public release of advisory


This vulnerability was discovered by: