Secunia

Dennis Rand has reported two vulnerabilities in Macallan Mail Solution, which can be exploited by malicious people to bypass authentication or cause a DoS (Denial of Service).

1) An error can be exploited to bypass the web interface user authentication via specially crafted HTTP requests containing either a non-existing directory or the URL-encoded representation of the "/" character.

Examples:
http://[host]:8080/%2f/newmessage.html
http://[host]:8080/does_not_exist/settings.html

Successful exploitation may reportedly allow relaying of messages, access to the administrative interface, or change passwords.

2) An error within the handling of certain HTTP GET requests can be exploited to crash the MCPop3 service via an overly long request starting with a "?" character.

The vulnerabilities have been reported in version 4.0.6.8 (Build 786). Other versions may also be affected.

Solution
Update to version 4.1.1.0 or later.

Provided and/or discovered by
Dennis Rand

Original Advisory
http://www.cirt.dk/Advisories/cirt-27-advisory.pdf

Deep Links
Links available in Customer Area