CVE-2021-3547
Description
OpenVPN 3 Core Library version 3.6 and 3.6.1 allows a man-in-the-middle attacker to bypass the certificate authentication by issuing an unrelated server certificate using the same hostname found in the verify-x509-name option in a client configuration.
References
Vendor Advisory
PatchVendor Advisory
CvssV3 impact
BaseSeverity | HIGH |
ConfidentialityImpact | HIGH |
AttackComplexity | HIGH |
Scope | UNCHANGED |
AttackVector | NETWORK |
AvailabilityImpact | NONE |
IntegrityImpact | HIGH |
PrivilegesRequired | NONE |
BaseScore | 7.4 |
VectorString | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
Version | 3.1 |
UserInteraction | NONE |
CvssV2 impact
AccessComplexity | MEDIUM |
ConfidentialityImpact | PARTIAL |
AvailabilityImpact | NONE |
IntegrityImpact | PARTIAL |
BaseScore | 5.8 |
VectorString | AV:N/AC:M/Au:N/C:P/I:P/A:N |
Version | 2.0 |
AccessVector | NETWORK |
Authentication | NONE |