CVE-2022-4967

2024-05-1312:09:19

canonical

github.com

authorization bypass

strongswan

certificate validation

CVSS3

7.7

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

AI Score

6.8

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

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

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