Absolute path traversal vulnerability in recordings/misc/audio.php in the Asterisk Recording Interface (ARI) web interface in Asterisk@Home before 2.8 allows remote attackers to read arbitrary MP3, WAV, and GSM files via a full pathname in the recording parameter. NOTE: this issue can also be used to determine existence of files.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25996
http://www.vupen.com/english/advisories/2006/1457
http://www.securityfocus.com/archive/1/431655/100/0/threaded