Stack-based buffer overflow in libtasn1 versions v4.20.0 and earlier

Overview A stack-based buffer overflow vulnerability exists in GNU libtasn1, a low-level ASN.1 parsing library. The issue is caused by unsafe string concatenation in the asn1expandoctetstring function located in decoding.c. Under worst-case conditions, this results in a one-byte stack overflow th...

OpenSSL: PKCS7 crash with missing EnvelopedContent

A NULL pointer dereference was found in the way OpenSSL handled certain PKCS7 inputs. An attacker able to make an application using OpenSSL verify, decrypt, or parse a specially crafted PKCS7 input could cause that application to crash. TLS/SSL clients and servers using OpenSSL were not affected ...