SolarWinds SFTP Insecure Password Storage / XXE Injection

In SolarWinds SFTP/SCP Server through 2018-09-10, the configuration file is world readable and writable, and stores user passwords in an insecure manner, allowing an attacker to determine passwords for potentially privileged accounts. This also grants the attacker an ability to backdoor the server. SolarWinds SFTP/SCP server through 2018-09-10 is vulnerable to XXE via a world readable and writable configuration file that allows an attacker to exfiltrate data. These vulnerabilities affect versions prior to November 2018 release.