CVE-2024-38480
📋 TL;DR
The Piccoma mobile app for Android and iOS versions before 6.20.0 contains a hard-coded API key for an external service. This allows local attackers with access to the device to extract the API key, potentially enabling unauthorized access to the external service. App users are not directly affected, but the service provider faces credential exposure risk.
💻 Affected Systems
- Piccoma mobile application
⚠️ 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 obtain the API key and use it to make unauthorized requests to the external service, potentially accessing sensitive data, incurring costs, or disrupting service functionality.
Likely Case
Local attackers extract the API key through reverse engineering or debugging, then use it for limited unauthorized API calls until the key is revoked.
If Mitigated
With proper monitoring and rate limiting on the external service, unauthorized usage is quickly detected and blocked with minimal impact.
🎯 Exploit Status
Exploitation requires local access to the device or app binary for reverse engineering. No authentication bypass needed once the key is extracted.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.20.0
Vendor Advisory: https://jvn.jp/en/jp/JVN01073312/
Restart Required: Yes
Instructions:
1. Update Piccoma app to version 6.20.0 or later via Google Play Store or Apple App Store. 2. Restart the app after update.
🔧 Temporary Workarounds
Restrict app installation sources
allOnly install Piccoma from official app stores to ensure you receive security updates.
Monitor external service usage
allService providers should implement API usage monitoring and anomaly detection for the exposed key.
🧯 If You Can't Patch
- Uninstall the Piccoma app if not essential.
- Contact the service provider to request API key rotation and implement additional authentication controls.
🔍 How to Verify
Check if Vulnerable:
Check app version in settings. If version is below 6.20.0, the app is vulnerable.Check Version:
Android: Settings > Apps > Piccoma > App info. iOS: Settings > General > iPhone Storage > PiccomaVerify Fix Applied:
Confirm app version is 6.20.0 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Unusual API call patterns from unexpected locations or devices
- Sudden increase in API usage from single key
Network Indicators:
- Traffic analysis showing API calls using hard-coded credentials
- Requests to external service from unauthorized clients
SIEM Query:
source="api_gateway" AND (key="piccoma_hardcoded_key" OR anomalous_request_pattern)🔗 References
- https://apps.apple.com/jp/app/%E3%83%94%E3%83%83%E3%82%B3%E3%83%9E/id1091496983
- https://jvn.jp/en/jp/JVN01073312/
- https://play.google.com/store/apps/details?id=jp.kakao.piccoma
- https://apps.apple.com/jp/app/%E3%83%94%E3%83%83%E3%82%B3%E3%83%9E/id1091496983
- https://jvn.jp/en/jp/JVN01073312/
- https://play.google.com/store/apps/details?id=jp.kakao.piccoma
