Executive Summary

Title Vulnerability in Telnet Could Allow Remote Code Execution (960859)
Name MS09-042 First vendor Publication 2009-08-11
Vendor Microsoft Last vendor Modification 2009-08-12
Severity (Vendor) Important Revision 1.1

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


Revision Note: Bulletin published.Summary: This security update resolves a publicly disclosed vulnerability in the Microsoft Telnet service. The vulnerability could allow an attacker to obtain credentials and then use them to log back into affected systems. The attacker would then acquire user rights on a system identical to the user rights of the logged-on user. This scenario could ultimately result in remote code execution on affected systems. An attacker who successfully exploited this vulnerability could install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Original Source

Url : http://www.microsoft.com/technet/security/bulletin/MS09-042.mspx

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-255 Credentials Management

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:6302
Oval ID: oval:org.mitre.oval:def:6302
Title: Telnet Credential Reflection Vulnerability
Description: The Telnet service in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2 allows remote Telnet servers to execute arbitrary code on a client machine by replaying the NTLM credentials of a client user, aka "Telnet Credential Reflection Vulnerability," a related issue to CVE-2000-0834.
Family: windows Class: vulnerability
Reference(s): CVE-2009-1930
Version: 1
Platform(s): Microsoft Windows 2000
Microsoft Windows XP
Microsoft Windows Vista
Microsoft Windows Server 2003
Microsoft Windows Server 2008
Definition Synopsis:

CPE : Common Platform Enumeration

Os 1
Os 3
Os 6
Os 5
Os 3

SAINT Exploits

Description Link
Windows Telnet credential reflection More info here

OpenVAS Exploits

Date Description
2009-08-12 Name : Telnet NTLM Credential Reflection Authentication Bypass Vulnerability (960859)
File : nvt/secpod_ms09-042.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
56904 Microsoft Windows Telnet NTLM Credential Reflection Remote Access

Information Assurance Vulnerability Management (IAVM)

Date Description
2009-08-13 IAVM : 2009-B-0037 - Microsoft Telnet Remote Code Execution Vulnerability
Severity : Category II - VMSKEY : V0019879

Snort® IPS/IDS

Date Description
2014-01-10 possible SMB replay attempt - overlapping encryption keys detected
RuleID : 17723 - Revision : 12 - Type : OS-WINDOWS
2014-01-10 Possible Microsoft telnet NTLM reflection attempt
RuleID : 17627 - Revision : 3 - Type : POLICY
2014-01-10 Telnet-based NTLM replay attack attempt
RuleID : 15847 - Revision : 14 - Type : OS-WINDOWS
2014-01-10 SMB replay attempt via NTLMSSP - overlapping encryption keys detected
RuleID : 15453 - Revision : 16 - Type : OS-WINDOWS
2014-01-10 Web-based NTLM replay attack attempt
RuleID : 15124 - Revision : 17 - Type : OS-WINDOWS
2014-01-10 possible SMB replay attempt - overlapping encryption keys detected
RuleID : 15009 - Revision : 22 - Type : OS-WINDOWS

Nessus® Vulnerability Scanner

Date Description
2009-08-11 Name : Arbitrary code can be executed on the remote host through the remote Telnet c...
File : smb_nt_ms09-042.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:46:18
  • Multiple Updates
2014-01-19 21:30:21
  • Multiple Updates
2013-11-11 12:41:12
  • Multiple Updates