opensc: Buffer overflows handling responses from Gemsafe V1 Smartcards in pkcs15-gemsafeV1.c:gemsafe_get_cert_len()

Several buffer overflows when handling responses from a Gemsafe V1 Smartcard in gemsafegetcertlen in libopensc/pkcs15-gemsafeV1.c in OpenSC before 0.19.0-rc1 could be used by attackers able to supply crafted smartcards to cause a denial of service application crash or possibly have unspecified...