CVE-2025-15464
📋 TL;DR
This vulnerability allows external applications to bypass security controls and directly launch Gmail with inbox access by exploiting an exported Activity component. It affects Android applications that improperly export sensitive activities, potentially exposing user email data to malicious apps.
💻 Affected Systems
- Android applications with exported Gmail-related activities
📦 What is this software?
Fun Print by Yintibao
⚠️ Risk & Real-World Impact
Worst Case
Malicious app gains full access to user's Gmail inbox, allowing email reading, sending, and data exfiltration without user consent.
Likely Case
Malicious app accesses limited email data or performs unauthorized actions within Gmail context.
If Mitigated
Proper Android permission controls prevent unauthorized activity launches, limiting impact to sandboxed environments.
🎯 Exploit Status
Proof-of-concept JavaScript demonstrates exploitation; requires user to install malicious app.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: N/A
Restart Required: No
Instructions:
1. Review Android app manifest for exported activities
2. Remove 'android:exported="true"' from sensitive activities
3. Implement proper permission checks for any exported activities
4. Rebuild and redeploy application
🔧 Temporary Workarounds
Disable vulnerable app
androidUninstall or disable affected applications until fixed
adb uninstall [package_name]
Settings > Apps > [App] > Uninstall/Disable
Review app permissions
androidCheck and restrict app permissions in Android settings
Settings > Apps > [App] > Permissions > Review/Revoke
🧯 If You Can't Patch
- Implement network segmentation to isolate affected devices
- Deploy mobile device management (MDM) to control app installations
🔍 How to Verify
Check if Vulnerable:
Use Android Debug Bridge (ADB) to check exported activities: adb shell dumpsys package [package_name] | grep -A5 -B5 'android:exported="true"'Check Version:
adb shell dumpsys package [package_name] | grep versionNameVerify Fix Applied:
Verify exported activities are removed or properly secured in AndroidManifest.xml📡 Detection & Monitoring
Log Indicators:
- Unauthorized activity launches in Android system logs
- Unexpected Gmail intents from third-party apps
Network Indicators:
- Unusual email sending patterns
- Unexpected API calls to Gmail services
SIEM Query:
source="android_logs" AND ("ActivityManager" OR "START") AND "com.google.android.gm" AND NOT "user_interaction"