Use-after-free in OpenVPN for Windows - CVE-2023-46850
Published: November 10, 2023
Vulnerability identifier: #VU82951
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-46850
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenVPN
Affected software:
OpenVPN for Windows
OpenVPN for Windows
Detailed vulnerability description
The vulnerability allows a remote user to gain access to sensitive information.
The vulnerability exists due to openvpn incorrectly uses a send buffer after it has been freed. Under certain circumstances the freed memory can be sent to the client peer, resulting in information disclosure. The vulnerability affects TLS configuration.
How to mitigate CVE-2023-46850
Install updates from vendor's website.