CVE-2024-23708
📋 TL;DR
This Android vulnerability allows malicious apps to access clipboard content without triggering the normal toast notification, enabling local privilege escalation without user interaction. It affects Android devices running vulnerable versions, allowing attackers to potentially steal sensitive clipboard data like passwords or payment information.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Attackers could silently steal sensitive clipboard data (passwords, authentication tokens, financial information) and use it for account takeover, financial fraud, or further system compromise.
Likely Case
Malicious apps could harvest clipboard data to collect user credentials, personal information, or other sensitive data copied by users.
If Mitigated
With proper app vetting and security controls, the risk is limited to untrusted apps that manage to bypass app store security checks.
🎯 Exploit Status
Exploitation requires a malicious app to be installed on the device. No user interaction is needed once the app is installed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: May 2024 Android Security Patch or later
Vendor Advisory: https://source.android.com/security/bulletin/2024-05-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Apply the May 2024 Android security patch or later. 3. Restart the device after installation.
🔧 Temporary Workarounds
Disable clipboard access for untrusted apps
androidReview and restrict clipboard permissions for apps that don't need this functionality
Avoid sideloading apps
androidOnly install apps from official app stores (Google Play Store)
🧯 If You Can't Patch
- Implement mobile device management (MDM) to control app installation and monitor for suspicious behavior
- Educate users about the risks of clipboard data and encourage clearing clipboard after copying sensitive information
🔍 How to Verify
Check if Vulnerable:
Check Android version and security patch level in Settings > About phone > Android versionCheck Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify the security patch level shows May 2024 or later in Settings > About phone > Android version📡 Detection & Monitoring
Log Indicators:
- Unusual clipboard access patterns in app logs
- Multiple clipboard access attempts without user interaction
Network Indicators:
- Unusual data exfiltration from mobile devices
- Suspicious network traffic from mobile apps
SIEM Query:
Look for events where apps access clipboard APIs without corresponding user interface events🔗 References
- https://android.googlesource.com/platform/frameworks/base/+/0c095c365ede36257e829769194f9596a598e560
- https://source.android.com/security/bulletin/2024-05-01
- https://android.googlesource.com/platform/frameworks/base/+/0c095c365ede36257e829769194f9596a598e560
- https://source.android.com/security/bulletin/2024-05-01
