#VU12129 Double free memory error in OpenVPN for Windows - CVE-2018-9336

Vulnerability identifier: #VU12129

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-9336

CWE-ID: CWE-415

Exploitation vector: Network

Exploit availability: No

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

Vendor: OpenVPN

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to double-free memory error in Interactive Service. A remote attacker can trigger memory corruption and cause the service to crash.

Mitigation
Update to version 2.4.6.

Vulnerable software versions

OpenVPN for Windows: 2.4.0 - 2.4.5

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External links
https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.