#VU67274 Permissions, Privileges, and Access Controls in Windows Server - CVE-2022-33679

Vulnerability identifier: #VU67274

Vulnerability risk: High

CVSSv4.0: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2022-33679

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in the Windows Kerberos. A remote attacker can perform a man-in-the-middle attack, leading to security restrictions bypass and privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2003, 2008 R2 SP1 - 2008, 2012 Gold - 2012, 2016 10.0.14393.10, 2019 10.0.17763.1 - 2019 2004, 2022 10.0.20348.202 - 2022 20H2

---

External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-33679
https://bugs.chromium.org/p/project-zero/issues/detail?id=2310

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.