CVE-2022-22039: Windows Network File System Remote Code Execution Vulnerability

Overview

Severity: High (CVSS 7.5)
CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Category: Remote Code Execution
Exploit Status: Not Exploited
Exploitation Likelihood: Less Likely
Patch Tuesday: 2022-Jul
Released: 2022-07-12
EPSS Score: 5.12% (percentile: 89.9%)

FAQ

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to win a race condition. How could an attacker exploit this vulnerability? This vulnerability could be exploited over the network by making an unauthenticated, specially crafted call to a Network File System (NFS) service to trigger a Remote Code Execution (RCE).

Affected Products (17)

Windows

Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows Server, version 20H2 (Server Core Installation)
Windows Server 2016
Windows Server 2016 (Server Core installation)

ESU

Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)

Security Updates (12)

Acknowledgments

<a href="https://twitter.com/guhe120">Yuki Chen</a> with <a href="https://www.cyberkl.com/">Cyber KunLun</a>

Revision History

2022-07-12: Information published.