Improper Certificate Validation

2024-06-2806:15:28

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

certificate

validation

vulnerability

subject alternative name

tls

x.509

host verification

phpseclib/phpseclib

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

6.5

Confidence

Low

JSON

phpseclib/phpseclib is vulnerable to Improper Certificate Validation. The vulnerability is due to some characters in Subject Alternative Name fields in TLS certificates that are allowed to have a special meaning in regular expressions, leading to name confusion in X.509 certificate host verification.