CVE-2024-56964
📋 TL;DR
This vulnerability in Guazi Used Car iOS app allows attackers to access sensitive user information by tricking users into clicking a crafted malicious link. It affects users of the Guazi Used Car iOS app version 10.15.1. The vulnerability is a URL redirection/open redirect issue that can lead to information disclosure.
💻 Affected Systems
- Guazi Used Car iOS 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 could steal sensitive user data including personal information, account credentials, or financial details by redirecting users to malicious sites that harvest information.
Likely Case
Attackers create phishing links that appear legitimate but redirect to malicious sites to steal session tokens or personal information from users who click them.
If Mitigated
With proper URL validation and user education about suspicious links, the impact is limited to unsuccessful phishing attempts.
🎯 Exploit Status
The GitHub reference contains technical details about the vulnerability. Exploitation requires user interaction (clicking a link) but is technically simple once the malicious link is crafted.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Check for app updates in the Apple App Store
2. Update to the latest version if available
3. If no update is available, contact Che Hao Duo Used Automobile Agency (Beijing) Co., Ltd for patch timeline
🔧 Temporary Workarounds
User Education and Awareness
allEducate users not to click on suspicious or unexpected links, even if they appear to come from legitimate sources.
Disable Automatic Link Opening
iosConfigure iOS settings to require user confirmation before opening links from unknown sources.
🧯 If You Can't Patch
- Temporarily restrict app usage to trusted networks only
- Implement web filtering to block known malicious domains and suspicious redirect patterns
🔍 How to Verify
Check if Vulnerable:
Check the app version in iOS Settings > General > iPhone Storage > Guazi Used Car. If version is 10.15.1, the app is vulnerable.Check Version:
Not applicable - check via iOS Settings as described aboveVerify Fix Applied:
Update the app through the App Store and verify the version is higher than 10.15.1.📡 Detection & Monitoring
Log Indicators:
- Unusual redirect patterns in app logs
- Multiple failed authentication attempts after link clicks
- Suspicious URL parameters in request logs
Network Indicators:
- Unexpected outbound connections to unknown domains after app link clicks
- Traffic patterns showing data exfiltration to suspicious IPs
SIEM Query:
source="ios_app_logs" AND app_name="Guazi Used Car" AND (url_contains="redirect" OR url_contains="callback") AND dest_ip NOT IN (trusted_domains)