The host is installed with OpenSSL 1.0.1 before 1.0.1k, 1.0.0 before 1.0.0p or 0.9.8 before 0.9.8zd and is prone to a security bypass vulnerability. A flaw is present in the application, which does not enforce certain constraints on certificate data. Successful exploitation allows remote attackers to defeat a fingerprint-based certificate-blacklist protection mechanism by including crafted data within a certificate's unsigned portion, related to crypto/asn1/a_verify.c, crypto/dsa/dsa_asn1.c, crypto/ecdsa/ecs_vrf.c, and crypto/x509/x_all.c.