FreeBSD: (Multiple Advisories) (CVE-2023-0464): OpenSSL -- Excessive Resource Usage Verifying X.509 Policy Constraints

A security vulnerability has been identified in all supported versions

of OpenSSL related to the verification of X.509 certificate chains

that include policy constraints. Attackers may be able to exploit this

vulnerability by creating a malicious certificate chain that triggers

exponential use of computational resources, leading to a denial-of-service

(DoS) attack on affected systems.

Policy processing is disabled by default but can be enabled by passing

the `-policy' argument to the command line utilities or by calling the

`X509_VERIFY_PARAM_set1_policies()' function.