Vulnerabilities > CVE-2020-1461 - Improper Privilege Management vulnerability in Microsoft products

CVSS 3.6 - LOW

Attack vector

LOCAL

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

PARTIAL

Availability impact

PARTIAL

local

low complexity

microsoft

CWE-269

NVD

Published: 2020-07-14

Updated: 2021-07-21

Summary

An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arbitrary locations.To exploit the vulnerability, an attacker would first have to log on to the system, aka 'Microsoft Defender Elevation of Privilege Vulnerability'.

Vulnerable Configurations

Part	Description	Count
Application	Microsoft Microsoft Windows Defender - Microsoft Forefront Endpoint Protection 2010 - Microsoft Security Essentials - Microsoft System Center Endpoint Protection - Microsoft System Center Endpoint Protection 2012	6
OS	Microsoft Microsoft Windows 10 - Microsoft Windows 10 1607 Microsoft Windows 10 1709 Microsoft Windows 10 1803 Microsoft Windows 10 1809 Microsoft Windows 10 1903 Microsoft Windows 10 1909 Microsoft Windows 7 - Microsoft Windows 8.1 - Microsoft Windows RT 8.1 - Microsoft Windows Server 2008 - Microsoft Windows Server 2008 R2 Microsoft Windows Server 2012 R2 Microsoft Windows Server 2012 - Microsoft Windows Server 2016 - Microsoft Windows Server 2016 1903 Microsoft Windows Server 2019 -	19

Common Weakness Enumeration (CWE)

CWE-269 - Improper Privilege Management

Common Attack Pattern Enumeration and Classification (CAPEC)

Restful Privilege Elevation
Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1461