CVE-2021-33982
📋 TL;DR
This vulnerability allows attackers to reuse, spoof, or steal user and admin sessions in the Fish | Hunt FL iOS app due to insufficient session expiration. Users of version 3.8.0 and earlier are affected, potentially compromising their accounts and administrative functions.
💻 Affected Systems
- Fish | Hunt FL iOS app
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative privileges, access sensitive user data, modify app configurations, or perform unauthorized actions on behalf of legitimate users.
Likely Case
Attackers hijack user sessions to access personal information, location data, or perform unauthorized app actions.
If Mitigated
Limited impact with proper session management, but still poses authentication bypass risks.
🎯 Exploit Status
Exploitation requires session token interception or capture, but techniques are well-documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 3.8.0
Vendor Advisory: Not publicly available
Restart Required: Yes
Instructions:
1. Update the Fish | Hunt FL app via the Apple App Store. 2. Ensure you're running a version newer than 3.8.0. 3. Restart the app after update.
🔧 Temporary Workarounds
Force logout and re-authentication
allManually log out all users and require fresh authentication to invalidate potentially compromised sessions.
Network segmentation and monitoring
allMonitor for unusual session patterns and segment app traffic to detect session hijacking attempts.
🧯 If You Can't Patch
- Discontinue use of vulnerable app versions and switch to alternative applications.
- Implement strict network monitoring for session token anomalies and unauthorized access patterns.
🔍 How to Verify
Check if Vulnerable:
Check app version in iOS Settings > General > iPhone Storage > Fish | Hunt FL. If version is 3.8.0 or earlier, you are vulnerable.Check Version:
Not applicable - check via iOS settings interfaceVerify Fix Applied:
Confirm app version is newer than 3.8.0 in iOS settings and test that sessions properly expire after logout or timeout.📡 Detection & Monitoring
Log Indicators:
- Multiple sessions from same user with different tokens
- Session tokens used after logout events
- Admin actions from non-admin IP addresses
Network Indicators:
- Unusual session token reuse patterns
- Session tokens transmitted over unencrypted channels
SIEM Query:
Not applicable for mobile app without centralized logging