Risk: High
A vulnerability recently found in multiple versions of IMail Server can be exploited to cause a buffer overflow.
The vulnerability is caused due to a boundary error in the SMTP service when processing certain strings. This can be exploited to cause a stack-based buffer overflow by supplying an overly long string containing '@' and ':' characters. Successful exploitation of the vulnerability allows execution of arbitrary code.
The vulnerability is known to exist in the following versions - IMail, IMail Plus, IMail Secure, Ipswitch Collaboration 2006 Suite Premium Edition and Ipswitch Collaboration 2006 Suite Standard Edition.
To resolve the issue, users should update to version 2006.1.