Cisco WebEx Training Center allows remote attackers to discover session numbers, and bypass host approval for audio-conference attendance, by reading HTML source code, aka Bug ID CSCul57126.Referenceshttp://osvdb.org/100914http://www.securitytracker.com/id/1029492https://exchange.xforce.ibmcloud.com/vulnerabilities/89652http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6972http://tools.cisco.com/security/center/viewAlert.x?alertId=32145http://www.securityfocus.com/bid/64282
