[SECURITY] CVE-2021-41767: Apache Guacamole: Private tunnel identifier may be included in the non-private details of active connections

[Mike Jumper <mjumper () apache org>]

Severity: moderate

Description:

Apache Guacamole 1.3.0 and older may incorrectly include a private
tunnel identifier in the non-private details of some REST responses.
This may allow an authenticated user who already has permission to
access a particular connection to read from or interact with another
user's active use of that same connection.

Credit:

We would like to thank Damian Velardo (Australia and New Zealand
Banking Group) for reporting this issue.