BID:24416

Microsoft Windows SChannel Security Remote Code Execution Vulnerability

Info

Microsoft Windows SChannel Security Remote Code Execution Vulnerability

Bugtraq ID:	24416
Class:	Design Error
CVE:	CVE-2007-2218
Remote:	Yes
Local:	No
Published:	Jun 12 2007 12:00AM
Updated:	Jul 12 2007 11:27PM
Credit:	Steven of COSEINC discovered this vulnerability.
Vulnerable:	Nortel Networks Web Centric Self-Svc VoiceXML Nortel Networks Web Centric Self-Svc CCXML Nortel Networks Self-Service WVADS 0 Nortel Networks Self-Service Speech Server 0 Nortel Networks Self-Service Peri Workstation 0 Nortel Networks Self-Service Peri Application 0 Nortel Networks Self-Service MPS 500 0 Nortel Networks Self-Service MPS 1000 0 Nortel Networks Self-Service MPS 100 0 Nortel Networks Multiservice Access Switch 4400 Nortel Networks Multimedia Comm MCS5100 Nortel Networks Enterprise Network Management System Nortel Networks Contact Center Express Nortel Networks Contact Center - TAPI Server 0 Nortel Networks Contact Center - Symposium Agent 0 Nortel Networks Contact Center Nortel Networks Centrex IP Client Manager 8.0 Nortel Networks Centrex IP Client Manager 7.0 Nortel Networks Centrex IP Client Manager 2.5 Nortel Networks Centrex IP Client Manager 9.0 Nortel Networks CallPilot 703t Nortel Networks CallPilot 702t Nortel Networks CallPilot 201i Nortel Networks CallPilot 200i Nortel Networks CallPilot 1002rp Microsoft Windows XP Tablet PC Edition SP2 Microsoft Windows XP Professional x64 Edition SP2 Microsoft Windows XP Professional x64 Edition Microsoft Windows XP Professional SP2 Microsoft Windows XP Media Center Edition SP2 Microsoft Windows XP Home SP2 Microsoft Windows Server 2003 x64 SP2 Microsoft Windows Server 2003 x64 SP1 Microsoft Windows Server 2003 Web Edition SP2 Microsoft Windows Server 2003 Web Edition SP1 Microsoft Windows Server 2003 Standard Edition SP2 Microsoft Windows Server 2003 Standard Edition SP1 Microsoft Windows Server 2003 Itanium SP2 Microsoft Windows Server 2003 Itanium SP1 Microsoft Windows Server 2003 Enterprise x64 Edition SP2 Microsoft Windows Server 2003 Enterprise Edition SP1 Microsoft Windows Server 2003 Datacenter x64 Edition SP2 Microsoft Windows Server 2003 Datacenter Edition SP1 Microsoft Windows Server 2003 SP2 Microsoft Windows Server 2003 SP1 Microsoft Windows 2000 Server SP4 Microsoft Windows 2000 Professional SP4 Microsoft Windows 2000 Datacenter Server SP4 Microsoft Windows 2000 Advanced Server SP4 HP Storage Management Appliance 2.1 + HP Storage Management Appliance III + HP Storage Management Appliance II + HP Storage Management Appliance I HP Storage Management Appliance 2.1 + HP Storage Management Appliance III + HP Storage Management Appliance II + HP Storage Management Appliance I Avaya Messaging Application Server MM 3.1 Avaya Messaging Application Server MM 3.0 Avaya Messaging Application Server MM 2.0 Avaya Messaging Application Server MM 1.1 Avaya Messaging Application Server 0 Avaya CIE 1.0

Not Vulnerable:	Microsoft Windows Vista x64 Edition 0 Microsoft Windows Vista 0

Discussion

Microsoft Windows SChannel Security Remote Code Execution Vulnerability

The Microsoft Windows Schannel security package is prone to a remote code-execution vulnerability.

This vulnerability occurs when processing and validating server-sent digital signatures by the client application.

A remote attacker could exploit this issue by convincing a victim to visit a malicious website. Remote code execution is possible, but may be extremely difficult. In most cases, denial-of-service conditions will occur.

Exploit / POC

Microsoft Windows SChannel Security Remote Code Execution Vulnerability

The following exploit is available to members of the Immunity Partner's Program:

https://www.immunityinc.com/downloads/immpartners/ms07_031.py

An exploit demonstrating a denial-of-service is also available:

https://www.immunityinc.com/downloads/immpartners/ms07_041.tarhttps://www.immunityinc.com/downloads/immpartners/ms07_041.tar

Solution / Fix

Microsoft Windows SChannel Security Remote Code Execution Vulnerability

Solution:
Microsoft released security bulletin MS07-031 with fixes to address this issue. Please see the references for more information.

Microsoft Windows XP Media Center Edition SP2