CVE-2022-4967

2024-05-1312:09:19

canonical

www.cve.org

strongswan

authorization bypass

certificate validation

cwe-297

eap methods

tls

fix

7.7 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

7.7 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

JSON

strongSwan versions 5.9.2 through 5.9.5 are affected by authorization bypass through improper validation of certificate with host mismatch (CWE-297). When certificates are used to authenticate clients in TLS-based EAP methods, the IKE or EAP identity supplied by a client is not enforced to be contained in the client’s certificate. So clients can authenticate with any trusted certificate and claim an arbitrary IKE/EAP identity as their own. This is problematic if the identity is used to make policy decisions. A fix was released in strongSwan version 5.9.6 in August 2022 (e4b4aabc4996fc61c37deab7858d07bc4d220136).

CNA Affected

[
  {
    "packageName": "strongswan",
    "platforms": [
      "Linux"
    ],
    "product": "strongSwan",
    "repo": "https://github.com/strongswan/strongswan",
    "vendor": "strongSwan",
    "versions": [
      {
        "lessThan": "5.9.6",
        "status": "affected",
        "version": "5.9.2",
        "versionType": "semver"
      }
    ]
  }
]