Microsoft Windows 2000 Telnet Privilege privileges management

Summaryinfo

A vulnerability was found in Microsoft Windows 2000. It has been classified as problematic. The impacted element is an unknown function of the component Telnet Privilege Handler. The manipulation leads to privileges management. This vulnerability is uniquely identified as CVE-2001-0349. Local access is required to approach this attack. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Windows 2000 (Operating System). This issue affects an unknown code block of the component Telnet Privilege Handler. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Microsoft Windows 2000 telnet service creates named pipes with predictable names and does not properly verify them, which allows local users to execute arbitrary commands by creating a named pipe with the predictable name and associating a malicious program with it, the first of two variants of this vulnerability.

The issue has been introduced in 02/17/2000. The weakness was disclosed 07/21/2001 with Microsoft as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. The identification of this vulnerability is CVE-2001-0349. The exploitation is known to be easy. An attack has to be approached locally. The requirement for exploitation is a simple authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 520 days. During that time the estimated underground price was around $25k-$100k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38016 (Microsoft Windows 2000 Telnet Privilege Escalation Vulnerability).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (6664), SecurityFocus (BID 2849†) and Vulnerability Center (SBV-3141†). The entry VDB-17058 is pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Microsoft

Name

• Windows

Version

• 2000

License

• commercial

Website

• Vendor: https://www.microsoft.com/
• Product: https://www.microsoft.com/en-us/windows

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

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