CVE-2025-0303
📋 TL;DR
A buffer overflow vulnerability in OpenHarmony v4.1.2 and earlier allows local attackers to escalate common permissions to root privileges and leak sensitive information. This affects all systems running vulnerable OpenHarmony versions, requiring local access to exploit.
💻 Affected Systems
- OpenHarmony
📦 What is this software?
Openharmony by Openatom
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with root access, sensitive data exfiltration, and persistence establishment
Likely Case
Local privilege escalation allowing unauthorized access to protected resources and data
If Mitigated
Limited impact if proper access controls and isolation mechanisms are in place
🎯 Exploit Status
Requires local access and buffer overflow exploitation knowledge
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: OpenHarmony v4.1.3 or later
Vendor Advisory: https://gitee.com/openharmony/security/blob/master/zh/security-disclosure/2025/2025-02.md
Restart Required: No
Instructions:
1. Check current OpenHarmony version. 2. Update to v4.1.3 or later via official channels. 3. Verify update completion.
🔧 Temporary Workarounds
Restrict local user access
allLimit local user accounts and implement strict access controls
🧯 If You Can't Patch
- Implement strict user privilege separation and least privilege principles
- Monitor for privilege escalation attempts and buffer overflow indicators
🔍 How to Verify
Check if Vulnerable:
Check OpenHarmony version: cat /etc/os-release | grep VERSIONCheck Version:
cat /etc/os-release | grep VERSIONVerify Fix Applied:
Confirm version is v4.1.3 or later: cat /etc/os-release | grep VERSION📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Buffer overflow error messages
- Abnormal process creation with elevated privileges
Network Indicators:
- Local privilege escalation typically has minimal network indicators
SIEM Query:
process:privilege_escalation AND os:openharmony