CVE-2025-8512

5.3 MEDIUM

📋 TL;DR

This vulnerability allows improper export of Android application components in TVB Big Big Shop App, potentially enabling local attackers to access sensitive app functionality. It affects Android users running version 2.9.0 of the app. The vulnerability stems from misconfiguration in the AndroidManifest.xml file.

💻 Affected Systems

Products:
  • TVB Big Big Shop App
Versions: 2.9.0
Operating Systems: Android
Default Config Vulnerable: ⚠️ Yes
Notes: Only affects Android version 2.9.0; requires app installation and local device access.

⚠️ 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.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Local attacker gains unauthorized access to app components, potentially accessing sensitive user data or performing actions within the app context.

🟠

Likely Case

Malicious app on same device exploits exported components to access limited app functionality or data.

🟢

If Mitigated

With proper Android security controls and app sandboxing, impact is limited to the specific app's data and functionality.

🌐 Internet-Facing: LOW - Attack requires local access to device, not remotely exploitable.
🏢 Internal Only: MEDIUM - Requires physical access or malicious app installation on target device.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: LOW

Exploit details publicly disclosed; requires local access and potentially another malicious app.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: UNKNOWN

Vendor Advisory: NONE

Restart Required: No

Instructions:

No official patch available. Vendor unresponsive. Consider uninstalling app until update.

🔧 Temporary Workarounds

Uninstall vulnerable app

android

Remove TVB Big Big Shop App 2.9.0 from Android devices

Settings > Apps > TVB Big Big Shop > Uninstall

Restrict app permissions

android

Limit app permissions to minimum required functionality

Settings > Apps > TVB Big Big Shop > Permissions

🧯 If You Can't Patch

  • Monitor for suspicious app behavior using Android security tools
  • Isolate device from sensitive networks and data

🔍 How to Verify

Check if Vulnerable:

Check app version in Settings > Apps > TVB Big Big Shop > App info

Check Version:

adb shell dumpsys package hk.com.tvb.bigbigshop | grep versionName

Verify Fix Applied:

Verify app is uninstalled or updated to version >2.9.0

📡 Detection & Monitoring

Log Indicators:

  • Unauthorized component access attempts in Android logs

Network Indicators:

  • N/A - local vulnerability only

SIEM Query:

N/A - local device-level issue

🔗 References

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