CVE-2017-11610

El servidor XML-RPC en supervisor en versiones anteriores a la 3.0.1, 3.1.x en versiones anteriores a la 3.1.4, 3.2.x en versiones anteriores a la 3.2.4, y 3.3.x en versiones anteriores a la 3.3.3 permite que atacantes remotos autenticados ejecuten comandos arbitrarios mediante una petición XML-RPC, relacionada con búsquedas de espacio de nombres supervisor anidados.

A vulnerability was found in the XML-RPC interface in supervisord. When processing malformed commands, an attacker can cause arbitrary shell commands to be executed on the server as the same user as supervisord. Exploitation requires the attacker to first be authenticated to the supervisord service.

Calum Hutton reported that the XML-RPC server in supervisor, a system for controlling process state, does not perform validation on requested XML-RPC methods, allowing an authenticated client to send a malicious XML-RPC request to supervisord that will run arbitrary shell commands on the server as the same user as supervisord. The vulnerability has been fixed by disabling nested namespace lookup entirely. supervisord will now only call methods on the object registered to handle XML-RPC requests and not any child objects it may contain, possibly breaking existing setups. No publicly available plugins are currently known that use nested namespaces. Plugins that use a single namespace will continue to work as before.