Microsoft Active Directory Domain Services Privilege Escalation Vulnerability

Active Directory Domain Services Elevation of Privilege Vulnerability

CheckOps priority index

7.7/10 Patch within 7 days

Severity7.5

Probability7.7

Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 77.2% higher than 99.6% of CVEs

CVSS 3.1 7.5 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:

Exploited for 1,667 days 11 Apr 2022

CISA due date 02 May 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

KEV catalog (CISA)11 Apr 2022
Exploited in EUVD (ENISA)11 Apr 2022
Used by ransomwareyes
EPSS above 10 %77.2%
No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Affected products

Windows Server 2008 Service Pack 2Windows Server 2012Windows Server 2016Windows Server version 2004Windows Server 2019Windows Server 2008 R2 Service Pack 1 (Server Core installation)Windows Server 2008 R2 Service Pack 1Windows Server 2012 R2Windows Server 2019 (Server Core installation)Windows Server version 20H2Windows Server 2008 Service Pack 2 (Server Core installation)Windows Server 2012 (Server Core installation)Windows Server 2016 (Server Core installation)Windows Server 2022Windows Server 2012 R2 (Server Core installation)Active Directory

Affected versions

6.0.6003.0 <6.0.6003.21282
6.2.9200.0 <6.2.9200.23517
10.0.14393.0 <10.0.14393.4770
10.0.0 <10.0.19041.1348
10.0.17763.0 <10.0.17763.2300
6.1.7601.0 <6.1.7601.25769
6.3.9600.0 <6.3.9600.20174
10.0.20348.0 <10.0.20348.350

Weaknesses (CWE)

CWE-269

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

10 Nov 2021
Published
11 Apr 2022
Exploitation reported (ENISA)
11 Apr 2022
Added to the KEV catalog
02 May 2022
CISA remediation due date
26 Sept 2026
EPSS peak: 77.2%

References

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