#VU87675 Stack-based buffer overflow in OpenVPN for Windows - CVE-2024-27459

Vulnerability identifier: #VU87675

Vulnerability risk: Low

CVSSv4.0: 5.9 [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:U/U:Clear]

CVE-ID: CVE-2024-27459

CWE-ID: CWE-121

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
OpenVPN for Windows
Client/Desktop applications / Software for system administration

Vendor: OpenVPN

Description

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

The vulnerability exists due to a boundary error within the interactive service component. A local user can trigger a stack-based buffer overflow and execute arbitrary code with elevated privileges.

The vulnerability affects Windows installations only.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenVPN for Windows: 2.0 _ - 2.0.10, 2.1 - 2.1.28.0, 2.2 - 2.2.3, 2.3 - 2.3.18, 2.4.0 - 2.4.12, 2.5.0 - 2.5.9, 2.6.0 - 2.6.9

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External links
https://github.com/OpenVPN/openvpn/releases/tag/v2.6.10
https://github.com/OpenVPN/openvpn/releases/tag/v2.5.10

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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.