AnalogX Proxy Denial of Service
Reported July 25, 2000 by Foundstone

VERSIONS EFFECTED
AnalogX Proxy 4.04 (and possibly previous versions)

DESCRIPTION

Several unchecked buffer exist within the product allowing for a diverse set of denial of service exploits against the various supported protocols. For example, the FTP and POP3 "USER" commands, as well as the SMTP "HELO" all contain unchecked buffers that can be overrun by sending 370 or more characters as the parameter string for the commands. In addition, the SOCK4 "CONNECT" command buffer will overflow with a parameter of 1800 characters or more.

VENDOR RESPONSE

AnalogX has released a new version 4.05 that corrects these problems.

CREDIT
Discovered by Robin Keir and Stuart McClure of Foundstone