Summary
Impact: Security Feature Bypass. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What kind of security feature could be bypassed by successfully exploiting this vulnerability?
A read only domain controller (RODC) is able to delegate rights by granting itself a ticket. A full DC does not validate the ticket thus granting R/W privileges to a DC that should only have read privileges.
Security updates
10.0.17763.2061 — https://support.microsoft.com/help/5004244
10.0.19041.1110 — https://support.microsoft.com/help/5004237
10.0.14393.4530 — https://support.microsoft.com/help/5004238
6.0.6003.21167 — https://support.microsoft.com/help/5004305
6.0.6003.21167 — https://support.microsoft.com/help/5004299
6.1.7601.25661 — https://support.microsoft.com/help/5004289
6.1.7601.25661 — https://support.microsoft.com/help/5004307
6.2.9200.23409 — https://support.microsoft.com/help/5004294
6.2.9200.23409 — https://support.microsoft.com/help/5004302
6.3.9600.20069 — https://support.microsoft.com/help/5004298
6.3.9600.20069 — https://support.microsoft.com/help/5004285
Vulnerabilities 1
-
High 8.1
Windows LSA Security Feature Bypass Vulnerability
Windows LSA Security Feature Bypass Vulnerability
Revision history
-
#1
Information published.
References
-
CVE-2021-33786 Windows LSA Security Feature Bypass Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33786
-
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
-
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
-
Common Vulnerability Scoring System
https://www.first.org/cvss