#VU6545 Denial of service in OpenVPN for Windows - CVE-2017-7479
Published: May 15, 2017 / Updated: May 16, 2017
Vulnerability identifier: #VU6545
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-7479
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
OpenVPN for Windows
OpenVPN for Windows
Software vendor:
OpenVPN
OpenVPN
Description
The vulnerability allows a remote authenticated attacker to cause DoS conditions on the target system.
The weakness exists due to improper user-input validation. A remote attacker can cause the packet-IDs on the target server to be consumed, trigger the server process to hit an ASSERT() and stop running.
Successful exploitation of the vulnerability of results in denial of service.
The weakness exists due to improper user-input validation. A remote attacker can cause the packet-IDs on the target server to be consumed, trigger the server process to hit an ASSERT() and stop running.
Successful exploitation of the vulnerability of results in denial of service.
Remediation
Update to version 2.3.15, 2.4.2 or later.