Insecure Regular Expressions in TLS Certificates Could Lead to Name Confusion
CVE-2023-52892

7.5HIGH

Key Information:

Vendor

phpseclib

Status
phpseclib
Vendor
CVE Published:
27 June 2024

What is CVE-2023-52892?

In affected versions of phpseclib, improperly handled characters in the Subject Alternative Name fields of TLS certificates can cause special characters, such as wildcards, to be misinterpreted. This flaw may lead to confusion during host verification, potentially allowing for identity spoofing. It is crucial for developers to update to patched versions to mitigate these risks and ensure proper validation of TLS certificates.

References

https://github.com/phpseclib/phpseclib/issues/1943
https://github.com/phpseclib/phpseclib/releases/tag/3.0.33
https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.