Check Point Advisories

Microsoft Telnet Authentication Bypass (CVE-2009-1930)

Vulnerability
Protection

Check Point Reference:	CPAI-2009-159
Date Published:	11 Aug 2009
Severity:	High
Last Updated:	Monday 18 November, 2024
Source:
Industry Reference:	CVE-2009-1930
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?	Microsoft Windows 2000 Microsoft Windows SP1 Microsoft Windows SP2 Microsoft Windows SP3 Microsoft Windows SP4 Microsoft Windows XP Microsoft Windows Server 2003 SP2 Microsoft Windows Vista Gold Microsoft Windows Server 2008 Gold
Vulnerability Description	An authentication bypass vulnerability exists in Microsoft Telnet. Successful exploitation of this vulnerability would allow remote attackers to gain unauthorized access into the affected system.

Protection Overview

This protection will detect and block attempts to reflect NTLM credentials via the Telnet protocol.

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 R81 / R80 / R77 / R75 / R71 / R70 / R65

In the IPS tab, click Protections and find the Microsoft Telnet Authentication Bypass (CVE-2009-1930) 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: Windows SMB Protection Violation.
Attack Information: Microsoft Telnet Authentication Bypass (CVE-2009-1930)