Vulnerability Details : 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 2022-03-18 18:15:12
Updated 2022-09-09 16:48:22
Source OpenVPN Inc.
View at NVD,   CVE.org
Vulnerability category: BypassGain privilege

Products affected by CVE-2022-0547

Exploit prediction scoring system (EPSS) score for CVE-2022-0547

EPSS FAQ
0.76%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-0547

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
 NIST
9.8
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
 NIST

CWE ids for CVE-2022-0547

  • When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
    Assigned by: nvd@nist.gov (Primary)
  • The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.
    Assigned by: security@openvpn.net (Secondary)

References for CVE-2022-0547

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