Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2022-0547

OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials.

Published

2022-03-18T18:15:12.017

Last Modified

2025-04-23T19:15:52.743

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

6.4

Weaknesses
  • Type: Secondary
    CWE-305
  • Type: Primary
    CWE-287
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application openvpn openvpn < 2.4.12 Yes
Application openvpn openvpn < 2.5.6 Yes
Operating System fedoraproject fedora 34 Yes
Operating System fedoraproject fedora 36 Yes
Operating System debian debian_linux 9.0 Yes
References