Exploit for Race Condition in Openbsd Openssh

SSH-User-Enum-Python3-CVE-2018-15473 SSH User Enumerator in P...

CVE-1999-1231

ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server...