MixMontior: Add class authorization requirements to MixMonitor AMI commands

MixMonitor AMI commands StartMixMonitor and StopMixMonitor lacked class
authorization. StopMixMonitor now requires that the manager user either have
the call or system class authorization. StartMixMonitor is a slightly larger
issue since it can execute shell commands if the right arguments are passed
into it, and we consider this a permission escalation. A security release
will be issued for problem this shortly.

ASTERISK-23609 #close
Reported by: Corey Farrell

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Merged revisions 415825 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 415832 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@415834 65c4cc65-6c06-0410-ace0-fbb531ad65f3

UPGRADE.txt

@@ -102,6 +102,11 @@ AMI:
    ConfbridgeMute, ConfbridgeUnmute, ConfbridgeTalking, BlindTransfer,
    AttendedTransfer, BridgeCreate, BridgeDestroy, BridgeEnter, BridgeLeave
 
+ - MixMonitor AMI actions now require users to have authorization classes.
+   * MixMonitor - system
+   * MixMonitorMute - call or system
+   * StopMixMonitor - call or system
+
 CDRs:
  - The "endbeforehexten" setting now defaults to "yes", instead of "no".
    When set to "no", yhis setting will cause a new CDR to be generated when a

apps/app_mixmonitor.c

@@ -1518,9 +1518,9 @@ static int load_module(void)
 	ast_cli_register_multiple(cli_mixmonitor, ARRAY_LEN(cli_mixmonitor));
 	res = ast_register_application_xml(app, mixmonitor_exec);
 	res |= ast_register_application_xml(stop_app, stop_mixmonitor_exec);
-	res |= ast_manager_register_xml("MixMonitorMute", 0, manager_mute_mixmonitor);
-	res |= ast_manager_register_xml("MixMonitor", 0, manager_mixmonitor);
-	res |= ast_manager_register_xml("StopMixMonitor", 0, manager_stop_mixmonitor);
+	res |= ast_manager_register_xml("MixMonitorMute", EVENT_FLAG_SYSTEM | EVENT_FLAG_CALL, manager_mute_mixmonitor);
+	res |= ast_manager_register_xml("MixMonitor", EVENT_FLAG_SYSTEM, manager_mixmonitor);
+	res |= ast_manager_register_xml("StopMixMonitor", EVENT_FLAG_SYSTEM | EVENT_FLAG_CALL, manager_stop_mixmonitor);
 	res |= ast_custom_function_register(&mixmonitor_function);
 	res |= set_mixmonitor_methods();