#VU59517 Out-of-bounds read in Windows and Windows Server - CVE-2022-21877

Vulnerability identifier: #VU59517

Vulnerability risk: Low

CVSSv4.0: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2022-21877

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: Yes

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

Vendor: Microsoft

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the Storage Spaces Controller (spaceport.sys drive). A local user can run a specially crafted program to trigger an out-of-bounds read error and read contents of memory with SYSTEM privileges..

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 S, 10 Gold, 10 Mobile, 10 20H2 10.0.19042.572, 10 21H1 10.0.19043.985, 10 21H2 10.0.19044.1288, 10 1507 10.0.10240.16405, 10 1511 10.0.10586.3, 10 1607 10.0.14393.10, 10 1703 10.0.15063.138, 10 1709 10.0.16299.19, 10 1803 10.0.17134.48, 10 1809 10.0.17763.1, 10 1903 10.0.18362.116, 10 1909 10.0.18363.476, 10 2004 10.0.19041.264, 10, 11 21H2 10.0.22000.194

Windows Server: 2019 10.0.17763.1 - 2019 2004, 2022 10.0.20348.202

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21877
https://www.zerodayinitiative.com/advisories/ZDI-22-048/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.