#VU76323 Race condition in macOS - CVE-2023-32413

Vulnerability identifier: #VU76323

Vulnerability risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2023-32413

CWE-ID: CWE-362

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
macOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition within the /dev/fd filesystem. A local user can exploit the race and execute arbitrary code with root privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

macOS: 13.0 22A380 - 13.3.1a 22E772610a

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External links
https://support.apple.com/en-us/HT213758
https://www.zerodayinitiative.com/advisories/ZDI-23-845/

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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?

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