CVE-2022-50952
📋 TL;DR
Banco Guayaquil 8.0.0 mobile iOS application contains a persistent cross-site scripting vulnerability in the profile name input field. Attackers can inject malicious JavaScript code through POST requests that executes automatically when users view profiles, potentially stealing session cookies or performing unauthorized actions. This affects all users of the vulnerable iOS banking application.
💻 Affected Systems
- Banco Guayaquil Mobile Banking
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal banking session cookies, perform unauthorized transactions, or redirect users to phishing sites, potentially leading to financial loss and account compromise.
Likely Case
Session hijacking leading to unauthorized access to banking accounts and potential financial fraud.
If Mitigated
Limited impact with proper input validation and output encoding, though some application functionality disruption may occur.
🎯 Exploit Status
Exploitation requires user interaction to view the malicious profile, but the payload executes automatically without further interaction. Attackers need to create or modify a profile with malicious input.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
1. Check Apple App Store for application updates
2. Update to the latest version if available
3. Monitor vendor communications for security patches
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side input validation and output encoding for all user-controlled fields
Content Security Policy
allImplement strict Content Security Policy headers to prevent script execution from untrusted sources
🧯 If You Can't Patch
- Disable profile editing functionality in the application
- Implement web application firewall rules to block XSS payloads in POST requests
🔍 How to Verify
Check if Vulnerable:
Test by submitting JavaScript payloads (e.g., <script>alert('XSS')</script>) in the profile name field and checking if it executes when viewing profilesCheck Version:
Check application version in iOS Settings > General > iPhone Storage > Banco GuayaquilVerify Fix Applied:
Verify that submitted script payloads are properly sanitized and do not execute when viewing profiles📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests containing script tags or JavaScript code to profile endpoints
- Multiple failed profile update attempts with suspicious payloads
Network Indicators:
- HTTP POST requests to profile endpoints containing script tags or JavaScript payloads
SIEM Query:
source="application_logs" AND ("POST /profile" OR "update_profile") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")