opensshでユーザの存在を確認できる脆弱性(CVE-2016-6210) - てきとうなメモFull Disclosure: opensshd - user enumeration When SSHD tries to authenticate a non-existing user, it will pick up a fake password structure hardcoded in the SSHD source code. On this hard coded password structure the password hash is based on BLOWFISH ($2) algorithm. If real users passwords are hashed using SHA256/SHA512, then sending large passwords (10KB) will result in shorter response time fro
