opensc: Out-of-bounds access of an ASN.1 Bitstring in decode_bit_string in libopensc/asn1.c

OpenSC before 0.20.0-rc1 has an out-of-bounds access of an ASN.1 Bitstring in decodebitstring in libopensc/asn1.c...

OpenSC out-of-bounds access vulnerability (CNVD-2019-31367)

OpenSC is a set of software tools and libraries for smart cards, focusing on smart cards with cryptographic capabilities. An ASN.1 Bitstring out-of-bounds access vulnerability exists in decodebitstring in libopensc/asn1.c in versions prior to OpenSC 0.20.0-rc1. No detailed vulnerability details a...