Home/CVE/OpenVPN Access Server older than version 2.8.4 and version 2.9.5 generates new user authentication tokens instead of reu
CVE

CVE-2020-15074

OpenVPN Access Server older than version 2.8.4 and version 2.9.5 generates new user authentication tokens instead of reu

OpenVPN Access Server older than version 2.8.4 and version 2.9.5 generates new user authentication tokens instead of reusing exiting tokens on reconnect making it possible to circumvent the initial token expiry timestamp.

HIGH · CVSS 7.5 EPSS 0.00188
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-302Authentication Bypass by Assumed-Immutable Data
CWE-613Insufficient Session Expiration
▤

Affected Products & Versions

2
openvpn access server< 2.8.4
openvpn access server>= 2.9.0 and < 2.9.6
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · security@openvpn.net
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Jul 2020 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://openvpn.net/vpn-server-resources/release-notes/Release NotesVendor Advisory
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