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).
http://erlang.org/pipermail/erlang-questions/2017-November/094255.html
http://erlang.org/pipermail/erlang-questions/2017-November/094256.html
http://erlang.org/pipermail/erlang-questions/2017-November/094257.html
http://www.securityfocus.com/bid/102197
https://access.redhat.com/errata/RHSA-2018:0242
https://access.redhat.com/errata/RHSA-2018:0303
https://access.redhat.com/errata/RHSA-2018:0368
https://access.redhat.com/errata/RHSA-2018:0528
https://lists.debian.org/debian-lts-announce/2017/12/msg00010.html
https://usn.ubuntu.com/3571-1/
Source: MITRE
Published: 2017-12-12
Updated: 2019-10-03
Type: CWE-203
Base Score: 4.3
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 2.2
Severity: MEDIUM