#VU92936 Permissions, Privileges, and Access Controls in OpenVPN for Windows - CVE-2024-4877

Vulnerability identifier: #VU92936

Vulnerability risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-4877

CWE-ID: CWE-264

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 application does not properly impose security restrictions on the service pipe. A local user with SeImpersonatePrivilege permissions can open the pipe a second time, tricking openvn GUI into providing user credentials (tokens), and gain full access to the account used by openvpn-gui.exe.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenVPN for Windows: 2.6.0 - 2.6.10

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External links
https://github.com/OpenVPN/openvpn/releases/tag/v2.6.11

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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.