|The PKCS#7 implementation in OpenSSL before 0.9.8zf, 1.0.0 before
1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a does not properly
handle a lack of outer ContentInfo, which allows attackers to cause a
denial of service (NULL pointer dereference and application crash) by
leveraging an application that processes arbitrary PKCS#7 data and
providing malformed data with ASN.1 encoding, related to
crypto/pkcs7/pk7_doit.c and crypto/pkcs7/pk7_lib.c.