Microsoft Windows 2000/Server 2003/XP Client Service for Netware memory corruption

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

Summaryinfo

A vulnerability identified as critical has been detected in Microsoft Windows 2000/Server 2003/XP. This affects an unknown function of the component Client Service for Netware. This manipulation causes memory corruption. This vulnerability is handled as CVE-2005-1985. The attack can be initiated remotely. Additionally, an exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

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 Client Service for Netware. 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:

The Client Service for NetWare (CSNW) on Microsoft Windows 2000 SP4, XP SP1 and Sp2, and Server 2003 SP1 and earlier, allows remote attackers to execute arbitrary code due to an "unchecked buffer" when processing certain crafted network messages.

The bug was discovered 08/09/2005. The weakness was released 10/11/2005 by Kostya Kortchinsky with CERT Renater as MS05-046 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. This vulnerability is known as CVE-2005-1985 since 06/17/2005. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but an exploit is available.

It is possible to download the exploit at immunitysec.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2063 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 20006 (MS05-046: Vulnerability in the Client Service for NetWare Could Allow Remote Code Execution (899589) (uncredentialed check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90280 (Microsoft Windows Client Service For Netware Buffer Overflow Vulnerability (MS05-046)).

Applying the patch MS05-046 is able to eliminate this problem. The bugfix is ready for download at windowsupdate.microsoft.com. Attack attempts may be identified with Snort ID 4608. In this case the pattern |05 00 00| is used for detection. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 3679.

The vulnerability is also documented in the databases at X-Force (21700), Tenable (20006), SecurityFocus (BID 15066†), OSVDB (19922†) and Secunia (SA17165†). Entries connected to this vulnerability are available at VDB-82, VDB-332, VDB-333 and VDB-427. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Support

  • end of life (old version)

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 20006
Nessus Name: MS05-046: Vulnerability in the Client Service for NetWare Could Allow Remote Code Execution (899589) (uncredentialed check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS05-046

Snort ID: 4608
Snort Message: NETBIOS DCERPC NCACN-IP-TCP netware_cs function 43 overflow attempt
Snort Pattern: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

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

Timelineinfo

02/17/2000 🔍
06/17/2005 +1947 days 🔍
08/09/2005 +53 days 🔍
10/11/2005 +63 days 🔍
10/11/2005 +0 days 🔍
10/11/2005 +0 days 🔍
10/11/2005 +0 days 🔍
10/11/2005 +0 days 🔍
10/12/2005 +1 days 🔍
10/12/2005 +0 days 🔍
10/12/2005 +0 days 🔍
10/13/2005 +0 days 🔍
06/30/2025 +7200 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS05-046
Researcher: Kostya Kortchinsky
Organization: CERT Renater
Status: Confirmed

CVE: CVE-2005-1985 (🔍)
GCVE (CVE): GCVE-0-2005-1985
GCVE (VulDB): GCVE-100-1801

OVAL: 🔍

X-Force: 21700 - Microsoft Windows Client Service for NetWare code execution, High Risk
SecurityFocus: 15066 - Microsoft Windows Client Service For Netware Buffer Overflow Vulnerability
Secunia: 17165 - Microsoft Windows Client Service for NetWare Buffer Overflow, Moderately Critical
OSVDB: 19922 - Microsoft Windows Client Service for NetWare (CSNW) Remote Overflow
SecurityTracker: 1015041
Vulnerability Center: 9397 - [MS05-046] CSNW Remote Code Execution via Unchecked Buffer, High

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

Entryinfo

Created: 10/12/2005 15:09
Updated: 06/30/2025 09:17
Changes: 10/12/2005 15:09 (110), 07/04/2019 17:27 (1), 06/30/2025 09:17 (19)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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