Denial of Service Vulnerability in OpenVPN Access Server
CVE-2020-36382

7.5HIGH

Key Information:

Vendor

Openvpn
Status
Openvpn Access Server
Vendor
CVE Published:
4 June 2021

What is CVE-2020-36382?

OpenVPN Access Server versions 2.7.3 to 2.8.7 are susceptible to a denial of service attack, where remote attackers can exploit the user authentication process. By sending maliciously crafted authentication token data, an attacker can trigger an assertion failure during the early stages of user authentication, leading to service disruptions and potential downtime for affected systems.

Affected Version(s)

OpenVPN Access Server 2.7.3 to 2.8.7

References

https://openvpn.net/vpn-server-resources/release-notes/
x_refsource_MISC
https://openvpn.net/security-advisory/access-server-secur...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.