Security Advisories
Security Advisories > SAP10003
DIR-865L - Rev. A1 - Web Configuration Pages have multiple CSRF Vulnerabiliies - (Firmware 1.03 or older)
Publication ID: SAP10003
Resolved Status:
Published on: 14 November 2013 3:39 GMT
Last updated on: 8 March 2014 2:01 GMT

 

Overview

 

The DIR865L router is susceptible to several CSRF attacks, which allow an attacker to forge HTML forms and execute actions in an authorized (logged in) browser session. These vulnerabilities allows an attacker, who has gained authorized access to the Web-GUI configration, the ability to change configuration or cause the product to be unreliable.

 

D-Link Security Incident Reponse Policy

 

All public communication on this issue will be offered at http://securityadvisories.dlink.com/security/

Our security response team can be contacted for incident information or to report incidents at security@dlink.com

Any non-critical security issue, help in updating firmware, or configuration regarding this issue please contact your D-Link Customer care channel.

 

Reference

 

Independent Security Evaluators (ISE) - Jacob Holcomb  - http://bit.ly/Z6aT48

Independent Security Evaluators(ISE) - Jacob Holcomb  - http://bit.ly/1bE4Ua3

 

General Disclosure

 

Security and performance is of the utmost importance to D-Link across all product lines. This is not just through the development process but also through regular firmware updates to comply with the current safety and quality standards. We are proactively working with the sources of these reports as well as continuing to review across the complete product line to ensure that the vulnerabilities discovered are addressed.  We will continue to update this page to include the relevant product firmware updates addressing these concerns. In the meantime, you can exercise the below cautions to avoid unwanted intrusion into your D-Link product.

 

Immediate Recommendations for all D-Link router customers

     

  • Do not enable the Remote Management feature since this will allow malicious users to use this exploit from the internet.  Remote Management is default disabled on all D-Link Routers and is included for customer care troubleshooting if useful and the customer enables it.
  • If you receive unsolicited e-mails that relates to security vulnerabilities and prompt you to action, please ignore it. When you click on links in such e-mails, it could allow unauthorised persons to access your router. Neither D-Link nor its partners and resellers will send you unsolicited messages where you are asked to click or install something.
  • Make sure that your wireless network is secure.
  • Do not provide your admin password to anyone. If required we suggest updating the password frequently.

 

Details

 The DIR865L router is susceptible to several CSRF attacks, which allow an attacker to forge HTML forms and execute actions in an authorized (logged in) browser session. A malicious attacker can exploit this vulnerability on an unsuspecting device administrator, allowing changes to the administrator credentials and enablement remote management services.

Requirements for the vulneratiblity to be exploited are:

  • The victim must have an active logged-in management session with the router.
  • The victim must be fooled in to performing an action (e.g., by clicking an attacker provided link), browse to a malicious or compromised site, or be the victim of a man-in-the-middle attack.

Due to the requirement of having to be authenticated (logged in) to the router, the threat of this attack has a very narrow scope so the impact to users is also considered narrow.  We also are aware that a exploit to take advantage of the vulnerability is not impossible.  In a hardend system, an external user would not have access to excutable commands with-in the router, they should only be accessible by the router's itself, which is configured thru the Web_GUI only.

 

In order to comply and close this vulnerability D-Link hasl released new firmware (v.1.05b07)  that corrects this vulnerability.

 

Affected Products

  • DIR-865L using firmware prior to version 1.05b07

  • All HTML forms withing the Web-GUI interface using firmware prior to v1.05b01 are susceptible to Cross-Site Request

 

Model Name

HW Version

Current FW Version

New FW Version for this exploit fix

DIR-865L

A1

v. 1.03

v. 1.05b07

 

Security patch for your D-Link router

 

These firmware updates address the security vulnerabilities in affected D-Link routers. D-Link will update this continually and we strongly recommend all users to install the relevant updates.

 

As there are different hardware revisions on our products, please check this on your device before downloading the correct corresponding firmware update. The hardware revision information can usually be found on the product label on the underside of the product next to the serial number. Alternatively, they can also be found on the device web configuration.

 

To update the firmware please log-in to the Web-GUI interface of your DIR-865L, from the menu select Maintanence -> System -> Upgrade Firmware. If you require help please contact your regional D-Link customer care website for options.

 

DIR-865L Revision A1

The new firmware 1.05 that fixes the security vulnerabilities
DIR-865L Revision A1 1.05B07

Release notes are included in the downloaded archive.