Device Name: DIR-635
Vendor: D-Link

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

Firmwareversion: 2.34EU
Hardware-Version: B1
Produktseite: DIR-635

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

* Stored XSS -> Status - WLAN -> SSID

Injecting scripts into the parameter config.wireless%5B0%5D.ssid_profiles%5B0%5D.ssid reveals that this parameter is not properly validated for malicious input. You need to be authenticated or you have to find other methods for inserting the malicious JavaScript code.

Place the Code via Setup -> Wireless -> Wireless Network Name

POST /Basic/Wireless.shtml 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: 2307


The code gets executed via Status -> Device Information:

* reflected XSS via Extras -> system Check -> Ping

Injecting scripts into the parameter data reveals that this parameter is not properly validated for malicious input.

* For changing the current password there is no request to the current password

With this vulnerability an attacker is able to change the current password without knowing it. The attacker needs access to an authenticated browser.

* CSRF for changing the password without knowing the current one and the attacker is able to activate the remote management:


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

No known solution available.

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

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

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

November 2012 - discovered vulnerability
11.11.2012 - contacted dlink via the webinterface
20.12.2012 - contacted Heise Security with details and Heisec forwarded the details to D-Link
21.12.2012 - D-link responded that they will check the findings
11.01.2013 - requested status update
25.01.2013 - requested status update
25.01.2013 - D-Link responded that this is a security problem from the user and/or browser and they will not provide a fix
25.04.2013 - public release

===================== Advisory end =====================
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D-Link DIR-635 – Multiple Vulnerabilities

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