#VU87678 Integer overflow in OpenVPN for Windows - CVE-2024-1305

Vulnerability identifier: #VU87678

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-2024-1305

CWE-ID: CWE-190

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 integer overflow in !TapSharedSendPacket within the Windows TAP driver. A local user can trigger integer overflow and execute arbitrary code with elevated privileges.

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.