CVE-2023-52892

In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.

Weakness

Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B’s state.

Affected Software

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/105.html
• https://cwe.mitre.org/data/definitions/273.html
• https://cwe.mitre.org/data/definitions/34.html

References

• https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627
• https://github.com/phpseclib/phpseclib/issues/1943
• https://github.com/phpseclib/phpseclib/releases/tag/3.0.33
• https://github.com/x509-name-testing/name_testing_artifacts
• https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627
• https://github.com/phpseclib/phpseclib/issues/1943
• https://github.com/phpseclib/phpseclib/releases/tag/3.0.33
• https://github.com/x509-name-testing/name_testing_artifacts