A flaw was found in the way OpenSSL will accept a certificate with explicitly set Basic Constraints to CA:FALSE as a valid CA if it is present in the trusted bundle. This flaw allows an attacker with access to a private key, of which the corresponding certificate is in the trust bundle, to use this flaw for MITM to any connection from the victim machine.
建议您更新当前系统或软件至最新版，完成漏洞的修复。