Improper Token Management in OpenVPN Access Server by OpenVPN
CVE-2020-15074

7.5HIGH

Key Information:

Vendor
Openvpn
Status
Openvpn Access Server
Vendor
CVE Published:
14 July 2020

Summary

OpenVPN Access Server prior to version 2.8.4 and 2.9.5 has a vulnerability that allows for improper management of user authentication tokens. On reconnect, the server generates new tokens rather than reusing existing ones, which can lead to the circumvention of the initial token expiry timestamp. This behavior poses a security risk, allowing unauthorized access under certain conditions.

Affected Version(s)

OpenVPN Access Server 2.8.3 and prior versions in addition to 2.9.5

References

https://openvpn.net/vpn-server-resources/release-notes/
x_refsource_MISC

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.