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Banco Guayaquil 8.0.0 Cross Site Scripting Vulnerability
Document Title: =============== Banco Guayaquil Versión 8.0.0 IOS - Cross Site Scripting Stored Credits & Authors: ================== TaurusOmar - @TaurusOmar_ (whoami@taurusomar.com) [taurusomar.com] Vendor Homepage: https://apps.apple.com/ec/app/banco-guayaquil/id624963066 =============== Release Date: ============= 2022-01-21 Security Risk: ============== The security risk of the persistent input validation vulnerability in the name value is estimated as medium. (CVSS 3.7) Product & Service Introduction: =============================== Official application of Banco Guayaquil to manage your finances your products with Banco Guayaquil, Make transactions from your accounts, Pay credit cards, loans and services as well as access your movements, Deposit checks, Request checkbooks, block cards, activate or deactivate consumption of the Internet and much more. Abstract Advisory Information: ============================== An independent Vulnerability Laboratory researcher discovered multiple vulnerabilities in the official aplication Banco Guayaquil 8.0.0. Vulnerability Disclosure Timeline: ================================== 2022-01-21: Public Disclosure Discovery Status: ================= Published Affected Product(s): ==================== Readdle Product: Banco Guayaquil - iOS Mobile Application Exploitation Technique: ======================= Local Severity Level: =============== Low Technical Details & Description: ================================ An application-side input validation vulnerability has been discovered in the official Banco Guayaquil iOS mobile application. The vulnerability allows a local attacker to inject own script code as payload to the application-side of the vulnerable service function or module. The vulnerability exists in the TextBox Name Profile in which injects the code is activated When the application is opened and close the app. Request Method(s): [+] Import Vulnerable Module(s): [+] Add Name Vulnerable Parameter(s): [+] TextBox Name Profile Vulnerable Final(s): [+] Save Profile Proof of Concept (PoC): ======================= The persistent input validation web vulnerability can be exploited by local attackers with system user account and without . For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue. 1. Install the ios application ( https://apps.apple.com/ec/app/banco-guayaquil/id624963066) 2. Add new name profile with script in the TexBox Name 2. Save Profile 3. Close app 4. Open Aplication 4. Successful reproduce of the persistent vulnerability! Proof of Concept (IMAGES): ======================= 1. https://i.imgur.com/Cc1VFUf.png 2. https://i.imgur.com/r1HWwrs.png Proof of Concept (VIDEO): ======================= 1. https://imgur.com/a/lQHt1br Payload: Cross Site Scripting ============================ Use Breaks JS Context: <object data>, javascript:alert, <img onerror> text/html;base64,PHNjcmlwdD5hbGVydCgiVnVsbmVyYWJsZSIpOzwvc2NyaXB0Pg ####### # # Disclaimer: # This or previous programs are for Educational purpose ONLY. Do not use it without permission. # The usual disclaimer applies, especially the fact that Taurus Omar is not liable for any damages # caused by direct or indirect use of the information or functionality provided by these programs. # The author or any Internet provider bears NO responsibility for content or misuse of these programs # or any derivatives thereof. By using these programs you accept the fact that any damage (dataloss, # system crash, system compromise, etc.) caused by the use of these programs are not Taurus Omar's # responsibility. # ####### # 0day.today [2024-06-02] #