CVE-2024-49409
📋 TL;DR
An out-of-bounds write vulnerability in the Battery Full Capacity node on Samsung Galaxy S24 devices allows local attackers with system privilege to write to unauthorized memory regions. This could lead to memory corruption, system instability, or potential privilege escalation. Only Galaxy S24 devices running firmware versions prior to the September 2024 update are affected.
💻 Affected Systems
- Samsung Galaxy S24
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Privilege escalation leading to complete device compromise, data theft, or persistent backdoor installation.
Likely Case
System instability, crashes, or limited privilege escalation within the device's local context.
If Mitigated
Minimal impact if proper access controls prevent unauthorized local system access.
🎯 Exploit Status
Requires local access and system privilege. No public exploit code known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware update September 2024 Release
Vendor Advisory: https://security.samsungmobile.com/serviceWeb.smsb?year=2024&month=09
Restart Required: Yes
Instructions:
1. Go to Settings > Software update > Download and install. 2. Apply the September 2024 firmware update. 3. Restart device when prompted.
🔧 Temporary Workarounds
Restrict local system access
allLimit physical access to devices and enforce strict privilege management to prevent unauthorized system access.
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement strict access controls and monitoring for local system activities
🔍 How to Verify
Check if Vulnerable:
Check firmware version in Settings > About phone > Software information. If build date is before September 2024, device is vulnerable.Check Version:
Settings > About phone > Software information > Build numberVerify Fix Applied:
Verify firmware version shows September 2024 update applied in Settings > About phone > Software information.📡 Detection & Monitoring
Log Indicators:
- Unusual system process crashes
- Memory access violations in system logs
- Unexpected battery service behavior
Network Indicators:
- None - local vulnerability only
SIEM Query:
Device logs showing battery service anomalies or memory access errors from system processes