Authorization Bypass through Improper Certificate Validation
CVE-2022-4967

7.7HIGH

Key Information:

Vendor

Strongswan

Status
Strongswan
Vendor
CVE Published:
14 May 2024

What is CVE-2022-4967?

A vulnerability exists in strongSwan versions 5.9.2 through 5.9.5 due to improper validation of certificates, resulting in authorization bypass. This issue allows clients to authenticate using any trusted certificate without the necessary enforcement of client identities being matched with those on the certificates. As a result, clients can claim any arbitrary IKE or EAP identity, which could lead to significant security risks, particularly when client identity is crucial for policy enforcement. A fix was released in strongSwan version 5.9.6 in August 2022.

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Affected Version(s)

strongSwan Linux 5.9.2 < 5.9.6

References

https://github.com/strongswan/strongswan/commit/e4b4aabc4...
patch
https://www.strongswan.org/blog/2024/05/13/strongswan-vul...
vendor-advisory
https://www.cve.org/CVERecord?id=CVE-2022-4967
issue-tracking

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jan Schermer
JSON
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