Unrestricted file upload vulnerability in the File Manager in the admin panel in Twentyone Degrees Symphony 1.7.01 and earlier allows remote attackers to execute arbitrary code by uploading a file with an executable extension to a directory specified in the destination parameter, then accessing the uploaded file via a direct request, as demonstrated using workspace/masters/.
https://www.exploit-db.com/exploits/6177
https://exchange.xforce.ibmcloud.com/vulnerabilities/44432
http://securityreason.com/securityalert/4137