Vulnerability identifier: #VU82952
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-369
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
OpenVPN
Server applications /
Remote access servers, VPN
Vendor: openvpn.net
Description
The vulnerability allows a remote client to perform a denial of service (DoS) attack.
The vulnerability exists due to server incorrectly restores "--fragment" configuration under certain circumstances. A remote client can cause a divide by zero error and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
OpenVPN: 2.6.0 - 2.6.6
External links
http://github.com/OpenVPN/openvpn/blob/v2.6.7/Changes.rst
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.