Microsoft Windows SMB Authentication improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.11

Summaryinfo

A vulnerability, which was classified as critical, was found in Microsoft Windows. Impacted is an unknown function of the component SMB Authentication. Such manipulation leads to improper authentication. This vulnerability is documented as CVE-2008-4037. Additionally, an exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System) (affected version not known) and classified as very critical. Affected by this issue is some unknown functionality of the component SMB Authentication. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Microsoft Windows 2000 Gold through SP4, XP Gold through SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008 allows remote SMB servers to execute arbitrary code on a client machine by replaying the NTLM credentials of a client user, as demonstrated by backrush, aka "SMB Credential Reflection Vulnerability." NOTE: some reliable sources report that this vulnerability exists because of an insufficient fix for CVE-2000-0834.

The bug was discovered 11/11/2008. The weakness was released 11/11/2008 by Andres Tarasco (LINUX) with Microsoft as MS08-068 as confirmed bulletin (Technet). The advisory is available at microsoft.com. This vulnerability is handled as CVE-2008-4037 since 09/10/2008. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 05/26/2025).

A public exploit has been developed by Andres Tarasco and been published before and not just after the advisory. The exploit is available at exploit-db.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 2026 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 34743 (MS08-068: Vulnerability in SMB Could Allow Remote Code Execution (957097)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90467 (Microsoft SMB Could Allow Remote Code Execution (MS08-068)).

Upgrading eliminates this vulnerability. Applying the patch MS08-068 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 14 hours after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 19860.

The vulnerability is also documented in the databases at X-Force (46194), Exploit-DB (7125), Tenable (34743), SecurityFocus (BID 7385†) and OSVDB (49736†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Author: Andres Tarasco
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 34743
Nessus Name: MS08-068: Vulnerability in SMB Could Allow Remote Code Execution (957097)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 900057
OpenVAS Name: SMB Could Allow Remote Code Execution Vulnerability (957097)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Saint ID: exploit_info/windows_smb_credential_reflection
Saint Name: Windows SMB credential reflection vulnerability

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: smb_relay.rb
MetaSploit Name: MS08-068 Microsoft Windows SMB Relay Code Execution
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS08-068
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

04/19/2003 🔍
04/25/2003 +6 days 🔍
09/10/2008 +1964 days 🔍
11/11/2008 +62 days 🔍
11/11/2008 +0 days 🔍
11/11/2008 +0 days 🔍
11/11/2008 +0 days 🔍
11/11/2008 +0 days 🔍
11/11/2008 +0 days 🔍
11/12/2008 +0 days 🔍
11/12/2008 +0 days 🔍
11/12/2008 +0 days 🔍
11/14/2008 +2 days 🔍
11/18/2008 +4 days 🔍
05/26/2025 +6033 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS08-068
Researcher: Andres Tarasco (LINUX)
Organization: Microsoft
Status: Confirmed

CVE: CVE-2008-4037 (🔍)
GCVE (CVE): GCVE-0-2008-4037
GCVE (VulDB): GCVE-100-3866

OVAL: 🔍

X-Force: 46194
SecurityFocus: 7385 - Microsoft Windows SMB Credential Reflection Vulnerability
Secunia: 32633 - Microsoft Windows SMB Authentication Credential Replay Vulnerability, Moderately Critical
OSVDB: 49736 - Microsoft Windows SMB NTLM Authentication Credential Replay Remote Code Execution
SecurityTracker: 1021163
Vulnerability Center: 19979 - [MS08-068] Microsoft Windows SMB NTLM Credentials Vulnerability Allows Remote Code Execution, Medium
Vupen: ADV-2008-3110

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/18/2008 18:38
Updated: 05/26/2025 04:03
Changes: 11/18/2008 18:38 (117), 08/20/2019 16:23 (2), 11/11/2024 06:45 (17), 05/26/2025 04:03 (2)
Complete: 🔍
Cache ID: 216:80C:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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