Microsoft Windows Certificate Dialog Privilege Escalation Vulnerability

An elevation of privilege vulnerability exists in the Windows Certificate Dialog when it does not properly enforce user privileges, aka 'Windows Certificate Dialog Elevation of Privilege Vulnerability'.

CheckOps priority index

5.2/10 Patch within 7 days

Severity7.8

Probability0.9

Exploitation3/5

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

EPSS · today 8.6% higher than 95.1% of CVEs

CVSS 3.1 7.8 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:

Exploited for 1,306 days 07 Apr 2023

CISA due date 28 Apr 2023 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

KEV catalog (CISA)07 Apr 2023
Exploited in EUVD (ENISA)07 Apr 2023
Used by ransomwareyes
EPSS above 10 %8.6%
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 ServerWindowsWindows 10 Version 1903 for x64-based SystemsWindows Server, version 1903 (Server Core installation)Windows 10 Version 1903 for 32-bit SystemsWindows 10 Version 1903 for ARM64-based Systems

Affected versions

2012
10 Version 1809 for ARM64-based Systems
2008 R2 for x64-based Systems Service Pack 1 (Core installation)
10 Version 1803 for ARM64-based Systems
10 for 32-bit Systems
unspecified
8.1 for x64-based systems
10 Version 1607 for 32-bit Systems
2008 for Itanium-Based Systems Service Pack 2
7 for 32-bit Systems Service Pack 1
10 for x64-based Systems
2016 (Core installation)

Weaknesses (CWE)

CWE-269

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

12 Nov 2019
Published
07 Apr 2023
Exploitation reported (ENISA)
07 Apr 2023
Added to the KEV catalog
28 Apr 2023
CISA remediation due date

References

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