The Erlang otp TLS server answers with different TLS alerts to different error types in the RSA PKCS #1 1.5 padding. This allows an attacker to decrypt content or sign messages with the server's private key (this is a variation of the Bleichenbacher attack).
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "18.3.4.7"
},
{
"introduced": "0"
},
{
"last_affected": "19.3.6.4"
},
{
"introduced": "0"
},
{
"last_affected": "20.1.7"
}
]
}