Auth bypass in Openvpn
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…
EPSS: 0.035 (87.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Openvpn
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 34, 36
- N/a Openvpn — versions version 2.1 until version 2.4.12 and 2.5.6.
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@openvpn.net (x_refsource_MISC, Vendor Advisory)
- security@openvpn.net (x_refsource_MISC, Vendor Advisory)
- security@openvpn.net (Patch, x_refsource_MISC, Vendor Advisory)
- security@openvpn.net (x_refsource_FEDORA, vendor-advisory)
- security@openvpn.net (x_refsource_FEDORA, vendor-advisory)
- security@openvpn.net (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-0547?
- CVE-2022-0547 is a critical-severity vulnerability in Openvpn, classified under Authentication Bypass by Primary Weakness. CVSS score: 9.8/10. Published 2022-03-18.
- How severe is CVE-2022-0547?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-0547 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.