Microsoft Windows 2000/Server 2003/XP DNS Resolver heap-based overflow

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Microsoft Windows 2000/Server 2003/XP. Affected by this issue is some unknown functionality of the component DNS Resolver. Such manipulation leads to heap-based overflow. This vulnerability is uniquely identified as CVE-2006-3441. Moreover, an exploit is present. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Windows 2000/Server 2003/XP (Operating System). Affected by this issue is an unknown part of the component DNS Resolver. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in the DNS Client service in Microsoft Windows 2000 SP4, XP SP1 and SP2, and Server 2003 SP1 allows remote attackers to execute arbitrary code via a crafted record response. NOTE: while MS06-041 implies that there is a single issue, there are multiple vectors, and likely multiple vulnerabilities, related to (1) a heap-based buffer overflow in a DNS server response to the client, (2) a DNS server response with malformed ATMA records, and (3) a length miscalculation in TXT, HINFO, X25, and ISDN records.

The bug was discovered 08/08/2006. The weakness was disclosed 08/08/2006 by Mark Dowd with ISS X-Force as MS06-041 as confirmed bulletin (Technet). The advisory is shared for download at microsoft.com. This vulnerability is handled as CVE-2006-3441 since 07/07/2006. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Python. The exploit is available at securityfocus.com. 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. Attack attempts may be identified with Snort ID 16029. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11982.

The vulnerability is also documented in the databases at X-Force (28013), Tenable (22183), SecurityFocus (BID 19404†), OSVDB (27844†) and Secunia (SA21394†). microsoft.com is providing further details. The entries VDB-2434, VDB-2436, VDB-2431 and VDB-2430 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Support

  • end of life (old version)

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

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

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: MS06-041

Snort ID: 16029
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

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

Timelineinfo

02/17/2000 🔍
07/07/2006 +2332 days 🔍
08/08/2006 +32 days 🔍
08/08/2006 +0 days 🔍
08/08/2006 +0 days 🔍
08/08/2006 +0 days 🔍
08/08/2006 +0 days 🔍
08/08/2006 +0 days 🔍
08/08/2006 +0 days 🔍
08/08/2006 +0 days 🔍
08/08/2006 +0 days 🔍
08/08/2006 +0 days 🔍
08/09/2006 +0 days 🔍
08/09/2006 +0 days 🔍
06/20/2025 +6889 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS06-041
Researcher: Mark Dowd
Organization: ISS X-Force
Status: Confirmed

CVE: CVE-2006-3441 (🔍)
GCVE (CVE): GCVE-0-2006-3441
GCVE (VulDB): GCVE-100-2432

OVAL: 🔍
IAVM: 🔍

CERT: 🔍
X-Force: 28013 - Microsoft Windows DNS client buffer overflow, High Risk
SecurityFocus: 19404 - Microsoft Windows DNS Client Buffer Overrun Vulnerability
Secunia: 21394 - Windows DNS Resolution Code Execution Vulnerabilities, Highly Critical
OSVDB: 27844 - Microsoft Windows DNS Client Service Record Response Overflow
SecurityTracker: 1016653
Vulnerability Center: 12494 - [MS06-041] Microsoft Windows DNS Client Buffer Overflow via Crafted Record Response, Critical
Vupen: ADV-2006-3211

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 08/09/2006 11:01
Updated: 06/20/2025 00:40
Changes: 08/09/2006 11:01 (115), 06/24/2019 09:56 (3), 01/05/2025 03:29 (17), 06/20/2025 00:40 (2)
Complete: 🔍
Cache ID: 216:F80:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!