CVE-2024-34630
📋 TL;DR
An out-of-bounds read vulnerability in Samsung Notes allows local attackers to potentially read memory contents when applying their own binary with a textbox. This affects Samsung Notes users on Samsung mobile devices prior to version 4.4.21.62. Attackers need local access to the device to exploit this vulnerability.
💻 Affected Systems
- Samsung Notes
📦 What is this software?
Notes by Samsung
⚠️ Risk & Real-World Impact
Worst Case
Local attacker could read sensitive memory contents, potentially exposing passwords, encryption keys, or other application data stored in memory.
Likely Case
Limited memory disclosure of adjacent data structures, potentially revealing some application state information but not full system compromise.
If Mitigated
With proper access controls and updated software, impact is minimal as the vulnerability requires local access and specific user interaction.
🎯 Exploit Status
Requires local access to device and user to apply malicious binary with textbox. No public exploit code available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.4.21.62
Vendor Advisory: https://security.samsungmobile.com/serviceWeb.smsb?year=2024&month=08
Restart Required: No
Instructions:
1. Open Samsung Galaxy Store or Google Play Store on your Samsung device. 2. Search for 'Samsung Notes'. 3. If update is available, tap 'Update'. 4. Alternatively, go to device Settings > Apps > Samsung Notes > App info > Update.
🔧 Temporary Workarounds
Disable Samsung Notes
androidTemporarily disable the Samsung Notes application to prevent exploitation
Settings > Apps > Samsung Notes > Disable
Restrict app installation
androidPrevent installation of untrusted applications that could contain malicious binaries
Settings > Security > Install unknown apps > Disable for all apps
🧯 If You Can't Patch
- Restrict physical access to devices and implement strong device access controls
- Educate users not to open or apply unknown binary files in Samsung Notes
🔍 How to Verify
Check if Vulnerable:
Check Samsung Notes version: Open Samsung Notes > Settings > About Samsung Notes > Check version numberCheck Version:
Not applicable - check via app interface as described aboveVerify Fix Applied:
Verify version is 4.4.21.62 or higher in Samsung Notes settings📡 Detection & Monitoring
Log Indicators:
- Unusual memory access patterns in application logs
- Multiple failed attempts to access memory addresses
Network Indicators:
- No network indicators - this is a local vulnerability
SIEM Query:
Not applicable for local memory read vulnerabilities without network component