In Rukovoditel V2.5.2, attackers can upload an arbitrary file to the server just changing the the content-type value. As a result of that, an attacker can execute a command on the server. This specific attack only occurs with the Maintenance Mode setting.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11817
Reference (s):
- https://fatihhcelik.blogspot.com/2020/01/rukovoditel-maintenance-mode.html