TP-Link TL-PS110U / TL-PS110P Cross Site Scripting

`GotGeek Labs  
http://www.gotgeek.com.br/  
  
TP-Link TL-PS110U & TL-PS110P Cross-site Scripting Vulnerability  
  
  
  
[+] Description  
  
TL-PS110U:  
The TP-LINK TL-PS110U print server allows you to take the computer out  
of the loop while setting up a printing network. All that is needed is to  
connect the TL-PS110U to a printer via the USB port, connect the print  
server to your LAN, and you will be able to access your printer from any  
computer on the LAN.  
  
TL-PS110P:  
The TP-LINK TL-PS110P print server allows you to take the computer out  
of the loop while setting up a printing network. All that is needed is to  
connect the TL-PS110P to a printer via the parallel port, connect the print  
server to your LAN, and you will be able to access your printer from any  
computer on the LAN.  
  
  
  
[+] Information  
  
Title: TP-Link TL-PS110U & TL-PS110P Cross-site Scripting Vulnerability  
Shodan Dork: ZOT-PS-47/9.8.0016 -WWW-Authenticate  
ZOT-PS-30/8.3.0013 -WWW-Authenticate  
Advisory: gg-006-2011  
Date: 03-15-2011  
Last update: 03-26-2011  
Link: http://www.gotgeek.com.br/pocs/gg-006-2011.txt  
  
  
  
[+] Vulnerabilities  
  
Stored Cross-site Scripting:  
Web interface from TL-PS110U and TL-PS110P Print Servers are affected by stored  
cross-site scripting vulnerability because it fails to properly sanitize  
user-supplied input at "NDSContext" field in "NetWare NDS Settings" area.  
An attacker may leverage this issue to execute arbitrary script code  
in the browser of an unsuspecting user in the context of the affected site.  
  
After injecting the XSS code, you need to access Netware status page.  
  
  
Affected Versions:  
  
TP-Link TL-PS110U Network Print Server  
Firmware: 9.08.47T 0016 (ZOT-PS-47/9.8.0016)  
9.08.47T 0013 (ZOT-PS-47/9.8.0013)  
6.03.35T 0007 (ZOT-PS-47/9.8.0007)  
6.03.35T 0006 (ZOT-PS-47/9.8.0006)  
6.03.35T 0005 (ZOT-PS-47/9.8.0005)  
6.03.35T 0004 (ZOT-PS-47/9.8.0004)  
  
TP-Link TL-PS110P Network Print Server  
Firmware: 8.03.30T 0013 (ZOT-PS-30/8.3.0013)  
8.03.30T 0009 (ZOT-PS-30/8.3.0009)  
8.03.30T 0008 (ZOT-PS-30/8.3.0008)  
  
Other versions may also be vulnerable.  
  
  
  
[+] Proof of Concept/Exploit  
  
XSS:  
http://target/RESTART.HTM?NDSContext=</script><script>alert("xss")</script><script>  
  
and then..  
  
http://target/NETWARE.HTM  
  
  
  
[+] Timeline  
  
24-03-2011: first contact to vendor.  
27-03-2011: support contact response, asking more details.  
27-03-2011: more information sent.  
03-04-2011: no vendor response.  
04-04-2011: advisory published.  
  
  
  
[+] References  
  
http://www.tp-link.com/products/productDetails.asp?class=&pmodel=TL-PS110U  
http://www.tp-link.com/products/productDetails.asp?class=&pmodel=TL-PS110P  
  
  
  
[+] Credits  
  
b0telh0  
`