CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS
Percentile
31.7%
A mutex controlling access to resources required for networking on Windows NTMicrosoft Windows NT 4.0 and Microsoft Windows NT 4.0, Terminal Server Edition, has inappropriate permissions.
In general terms, a mutex is an object used to control access to a resource (e.g. a printer, disk, segment of memory, data structure, etc.) so that only a single “consumer” (e.g. a process or program) can have access to the resource at any one time. That is, it enforces a policy of mutualexclusion between would-be consumers of a resource, typically so that access to the resource can by properly synchronized. A process that has acess to a resource controlled by a mutex is said to have locked the mutex. A process that “wants” a resource locked by another process is said to be waiting on the mutex, or waiting on a locked mutex.
Microsoft Windows NT 4.0 and Microsoft Windows NT 4.0, Terminal Server Edition uses a mutex named Winsock2ProtocolCatalogMutex
to control access to resources required for NT networking to function properly. On unpatched versions of Windows, the mutex is protected inappropriately so that ordinary users can disable access to the mutex by changing the ACL on the mutex , or lock the mutex indefinitely. In either case, the intruder can effectively disable network access on that machine.
Intruders who can log in locally can effectively disable network access for the machine.
Apply a patch as described in MS01-003.
354648
Filter by status: All Affected Not Affected Unknown
Filter by content: __ Additional information available
__ Sort by: Status Alphabetical
Expand all
Javascript is disabled. Click here to view vendors.
Notified: January 24, 2001 Updated: February 05, 2001
Affected
See <http://www.microsoft.com/technet/security/bulletin/MS01-003.asp>
The vendor has not provided us with any further information regarding this vulnerability.
The CERT/CC has no additional comments at this time.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23354648 Feedback>).
Group | Score | Vector |
---|---|---|
Base | ||
Temporal | ||
Environmental |
Our thanks to Arne Vidstrom who discovered the problem, and Microsoft for the information provided in their bulletin.
This document was written by Shawn V. Hernan.
CVE IDs: | CVE-2001-0006 |
---|---|
Severity Metric: | 2.16 Date Public: |
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS
Percentile
31.7%