TippingPoint Zero Day Initiative

Ipswitch Imail Server Mailing List Remote Code Execution Vulnerability

ZDI-10-127: July 15th, 2010

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10000. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of IPSwitch IMail. Authentication might be required to exploit this vulnerability.

The specific flaw exists within imailsrv.exe which is invoked to handle messages sent to the imailsrv. When a message subject contains a "?Q?" operator the string following that sequence is copied to a local stack buffer. No validation of the data or data length is done.
In order to reach this code path a mailing list must be password protected (authentication required) or have previously had a password configured (no authentication required). A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the SYSTEM user.

Vendor Response

Ipswitch states:

Update to the latest version 11.02

Disclosure Timeline

    2010-06-08 - Vulnerability reported to vendor
    2010-07-15 - Coordinated public release of advisory


This vulnerability was discovered by: