Microsoft Windows 2000/Server 2003/XP Winsock API memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

A vulnerability classified as critical was found in Microsoft Windows 2000/Server 2003/XP (Operating System). Affected by this vulnerability is some unknown functionality of the component Winsock API. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in the Winsock API in Microsoft Windows 2000 SP4, XP SP1 and SP2, and Server 2003 SP1 allows remote attackers to execute arbitrary code via unknown vectors, aka "Winsock Hostname Vulnerability."

The bug was discovered 08/08/2006. The weakness was released 08/08/2006 by Peter Winter Smith with NGS Software as MS06-041 as confirmed bulletin (Technet). It is possible to read the advisory at microsoft.com. This vulnerability is known as CVE-2006-3440 since 07/07/2006. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2364 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 22183 (MS06-041: Vulnerability in DNS Resolution Could Allow Remote Code Execution (920683)), 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 90337 (Vulnerability in DNS Resolution Could Allow Remote Code Execution (MS06-041)).

Applying the patch MS06-041 is able to eliminate this problem. The bugfix is ready for download at windowsupdate.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 4599.

The vulnerability is also documented in the databases at X-Force (28014), Tenable (22183), SecurityFocus (BID 19319†), OSVDB (27843†) and Secunia (SA21394†). Additional details are provided at microsoft.com. Entries connected to this vulnerability are available at VDB-2434, VDB-2436, VDB-2430 and VDB-2432. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

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Current Price Estimation: 🔍

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Nessus ID: 22183
Nessus Name: MS06-041: Vulnerability in DNS Resolution Could Allow Remote Code Execution (920683)
Nessus File: 🔍
Nessus Risk: 🔍
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Nessus Context: 🔍

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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS06-041
TippingPoint: 🔍
Fortigate IPS: 🔍

Timelineinfo

02/17/2000 🔍
07/07/2006 +2332 days 🔍
08/08/2006 +32 days 🔍
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01/05/2025 +6724 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS06-041
Researcher: Peter Winter Smith
Organization: NGS Software
Status: Confirmed

CVE: CVE-2006-3440 (🔍)
GCVE (CVE): GCVE-0-2006-3440
GCVE (VulDB): GCVE-100-2431

OVAL: 🔍
IAVM: 🔍

CERT: 🔍
X-Force: 28014
SecurityFocus: 19319 - Microsoft Winsock Gethostbyname Buffer Overflow Vulnerability
Secunia: 21394 - Windows DNS Resolution Code Execution Vulnerabilities, Highly Critical
OSVDB: 27843 - Microsoft Windows Winsock API Hostname Remote Code Execution
SecurityTracker: 1016653
Vulnerability Center: 12493 - [MS06-041] Microsoft Windows Buffer Overflow in Winsock API, Critical
Vupen: ADV-2006-3211

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 08/09/2006 11:01 AM
Updated: 01/05/2025 03:29 AM
Changes: 08/09/2006 11:01 AM (104), 06/24/2019 09:53 AM (2), 01/05/2025 03:29 AM (17)
Complete: 🔍
Cache ID: 18:477:40

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