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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.38% probability · 31th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-436
- Affected
- phpseclib/phpseclib
- Source
- cve@mitre.org
References
- https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627Patch
- https://github.com/phpseclib/phpseclib/issues/1943Exploit, Issue Tracking
- https://github.com/phpseclib/phpseclib/releases/tag/3.0.33Release Notes
- https://github.com/x509-name-testing/name_testing_artifactsNot Applicable
- https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627Patch
- https://github.com/phpseclib/phpseclib/issues/1943Exploit, Issue Tracking
- https://github.com/phpseclib/phpseclib/releases/tag/3.0.33Release Notes
- https://github.com/x509-name-testing/name_testing_artifactsNot Applicable
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.