CVE-2024-4303
📋 TL;DR
This vulnerability allows remote attackers who have obtained valid user credentials to bypass multi-factor authentication (MFA) in the ArmorX Android app. Attackers can successfully log into the app without completing the MFA challenge. All users of the vulnerable ArmorX Android app are affected.
💻 Affected Systems
- ArmorX Android App
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers with stolen credentials gain full access to user accounts, potentially compromising sensitive data, performing unauthorized transactions, or accessing protected systems.
Likely Case
Credential stuffing attacks succeed where attackers use previously breached credentials to access ArmorX accounts, leading to data theft and account takeover.
If Mitigated
With proper MFA implementation, attackers cannot access accounts even with valid credentials, requiring successful MFA challenge completion.
🎯 Exploit Status
Exploitation requires valid user credentials but bypasses MFA entirely. Credential acquisition through phishing, data breaches, or credential stuffing enables attack.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific version
Vendor Advisory: https://www.twcert.org.tw/tw/cp-132-7781-ef309-1.html
Restart Required: No
Instructions:
1. Update ArmorX Android app to latest version from Google Play Store
2. Verify MFA is properly enforced during login
3. Test authentication flow with valid credentials and MFA challenge
🔧 Temporary Workarounds
Disable App Access
allTemporarily disable or restrict access to the ArmorX Android app until patched
Enforce Strong Password Policies
allRequire complex, unique passwords and regular password changes to reduce credential theft risk
🧯 If You Can't Patch
- Implement additional authentication layer (e.g., VPN with MFA before app access)
- Monitor for suspicious login attempts and implement account lockout policies
🔍 How to Verify
Check if Vulnerable:
Test login with valid credentials while intentionally failing MFA challenge; if login succeeds, system is vulnerableCheck Version:
Check app version in Android Settings > Apps > ArmorXVerify Fix Applied:
Test login with valid credentials while failing MFA challenge; login should be blocked and require successful MFA completion📡 Detection & Monitoring
Log Indicators:
- Successful logins without corresponding MFA challenge completion
- Multiple failed MFA attempts followed by successful login
- Login from unusual locations without MFA verification
Network Indicators:
- Authentication requests that bypass MFA endpoints
- Login traffic patterns inconsistent with MFA workflow
SIEM Query:
source="armorx_logs" AND event="login_success" AND NOT event="mfa_success"