Microsoft IIS .HTR Filter Multiple Overflows (MS02-028)

This script is Copyright (C) 2002-2014 Tenable Network Security, Inc.


Synopsis :

The remote web server is affected by a buffer overflow vulnerability.

Description :

The remote server is vulnerable to a buffer overflow in the .HTR
filter.

An attacker may use this flaw to execute arbitrary code on
this host (although the exploitation of this flaw is considered
difficult).

See also :

http://technet.microsoft.com/en-us/security/bulletin/ms02-028

Solution :

To unmap the .HTR extension:
1.Open Internet Services Manager
2.Right-click the Web server choose Properties from the context menu
3.Master Properties
4.Select WWW Service -> Edit -> HomeDirectory -> Configuration
5.Remove the reference to .htr from the list

See Microsoft bulletin MS02-028 for a patch.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 6.2
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true

Family: Web Servers

Nessus Plugin ID: 11028 (iis_htr_overflow.nasl)

Bugtraq ID: 4855
5003

CVE ID: CVE-2002-0364
CVE-2002-0071