OpenSSL Cryptographic Issues Vulnerability - CVE-2013-0166
OpenSSL before 0.9.8y 1.0.0 before 1.0.0k and 1.0.1 before 1.0.1d does not properly perform signature verification for OCSP responses which allows remote OCSP servers to cause a denial of service (NULL pointer dereference and application crash) via an invalid key.