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

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Debian Security Advisory DSA-3942-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                     Salvatore Bonaccorso
August 13, 2017                       https://www.debian.org/security/faq
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Package        : supervisor
CVE ID         : CVE-2017-11610
Debian Bug     : 870187

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. Details can be found
on the upstream issue at
https://github.com/Supervisor/supervisor/issues/964 .

For the oldstable distribution (jessie), this problem has been fixed
in version 3.0r1-1+deb8u1.

For the stable distribution (stretch), this problem has been fixed in
version 3.3.1-1+deb9u1.

We recommend that you upgrade your supervisor packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

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