Microsoft IIS .HTR ISAPI chunked encoding buffer overflow

Added: 02/17/2006
CVE: CVE-2002-0364
BID: 4855
OSVDB: 5316

Background

Microsoft IIS web servers include ISAPI extensions which are invoked in the server process to handle requests of a given type.

Problem

A heap overflow in IIS 4.0 and 5.0 when processing chunked encoding transfers of HTR requests allows command execution.

Resolution

Apply the patch referenced in Microsoft Security Bulletin 02-028.

References

<http://archives.neohapsis.com/archives/bugtraq/2002-06/0104.html&gt;

Limitations

Since this is a heap overflow vulnerability, the exploit only works in certain system states.

Platforms

Windows 2000 / Windows 2000 SP1
Windows 2000 SP2