CVE-2023-43612
📋 TL;DR
CVE-2023-43612 is a local privilege escalation vulnerability in OpenHarmony that allows attackers to read and write arbitrary files due to improper permission preservation. This affects OpenHarmony v3.2.2 and earlier versions, enabling local attackers to bypass intended file access restrictions.
💻 Affected Systems
- OpenHarmony
📦 What is this software?
Openharmony by Openatom
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through arbitrary file read/write, potentially leading to privilege escalation, data theft, or system manipulation.
Likely Case
Local attackers gaining unauthorized access to sensitive files, potentially compromising user data or system integrity.
If Mitigated
Limited impact with proper access controls and isolation mechanisms in place.
🎯 Exploit Status
Requires local access but exploitation appears straightforward based on the CWE-281 description.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: OpenHarmony v3.2.3 or later
Vendor Advisory: https://gitee.com/openharmony/security/blob/master/zh/security-disclosure/2023/2023-12.md
Restart Required: Yes
Instructions:
1. Update OpenHarmony to version 3.2.3 or later. 2. Apply the security patch from the vendor advisory. 3. Restart the system to ensure changes take effect.
🔧 Temporary Workarounds
Restrict Local Access
allLimit local user access to systems running vulnerable OpenHarmony versions
Enhanced File Monitoring
allImplement file integrity monitoring for critical system files
🧯 If You Can't Patch
- Implement strict access controls to limit local user privileges
- Deploy application whitelisting to prevent unauthorized file operations
🔍 How to Verify
Check if Vulnerable:
Check OpenHarmony version: cat /etc/os-release | grep VERSIONCheck Version:
cat /etc/os-release | grep VERSIONVerify Fix Applied:
Verify version is 3.2.3 or later: cat /etc/os-release | grep VERSION📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns
- Permission modification attempts
- Failed access control events
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Search for file access events from non-privileged users accessing system files