The Administration GUI in the web framework in VOSS in Cisco Unified Communications Domain Manager (CDM) 9.0(.1) and earlier does not properly implement access control, which allows remote attackers to enumerate account names via a crafted URL, aka Bug IDs CSCun39631 and CSCun39643.
http://www.securitytracker.com/id/1030306
http://www.securityfocus.com/bid/67663
http://tools.cisco.com/security/center/viewAlert.x?alertId=34381
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3279