Roundcube Files or Directories Accessible to External Parties Vulnerability - CVE-2017-16651

Roundcube Webmail before 1.1.10 1.2.x before 1.2.7 and 1.3.x before 1.3.3 allows unauthorized access to arbitrary files on the host39s filesystem including configuration files as exploited in the wild in November 2017. The attacker must be able to authenticate at the target system with a valid username/password as the attack requires an active session. The issue is related to file-based attachment plugins and _tasksettingsamp_actionupload-displayamp_fromtimezone requests.