Check Point Advisories

Microsoft IIS FTP Server Telnet IAC Buffer Overflow (CVE-2010-3972)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-2245
Date Published:	27 Nov 2014
Severity:	Critical
Last Updated:	Tuesday 10 November, 2015
Source:	Microsoft MS11-004
Industry Reference:	CVE-2010-3972
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Internet Information Services (IIS) 7.5
Vulnerability Description	A heap buffer overflow vulnerability exists within the Microsoft Internet Information Services (IIS) FTP Service. The vulnerability is due to a memory corruption encountered when encoding Telnet IAC characters in a FTP response. A remote unauthenticated attacker may exploit this vulnerability by sending a crafted FTP request to a target server. Successful exploitation can lead to execution of arbitrary code or a denial of service condition of FTP services.
Update/Patch Avaliable	Apply patches from: MS11-004

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the Microsoft IIS FTP Server Telnet IAC Buffer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: FTP Enforcement Violation.
Attack Information: Microsoft IIS FTP Server Telnet IAC Buffer Overflow