CVE-2024-28226
📋 TL;DR
CVE-2024-28226 is an improper input validation vulnerability in OpenHarmony that allows remote attackers to cause denial of service (DoS) by sending specially crafted input. This affects OpenHarmony v4.0.0 and earlier versions, potentially impacting devices running this open-source operating system.
💻 Affected Systems
- OpenHarmony
📦 What is this software?
Openharmony by Openatom
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash or unavailability of critical services, rendering affected devices unusable until rebooted.
Likely Case
Service disruption affecting specific components or applications, requiring restart of affected services.
If Mitigated
Minimal impact with proper input validation and rate limiting in place.
🎯 Exploit Status
The vulnerability allows remote exploitation without authentication, making it relatively easy to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: OpenHarmony v4.0.1 or later
Vendor Advisory: https://gitee.com/openharmony/security/blob/master/zh/security-disclosure/2024/2024-04.md
Restart Required: Yes
Instructions:
1. Check current OpenHarmony version. 2. Update to OpenHarmony v4.0.1 or later. 3. Reboot the device after update. 4. Verify the update was successful.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to OpenHarmony devices to trusted networks only
Input Validation Enhancement
allImplement additional input validation at application layer
🧯 If You Can't Patch
- Isolate affected devices in separate network segments with strict firewall rules
- Implement monitoring for unusual traffic patterns and implement rate limiting
🔍 How to Verify
Check if Vulnerable:
Check OpenHarmony version: cat /etc/openharmony_version or equivalent system commandCheck Version:
cat /etc/openharmony_version || hdc shell getprop ro.build.version.ohosVerify Fix Applied:
Verify version is v4.0.1 or later and test system stability with various inputs📡 Detection & Monitoring
Log Indicators:
- System crash logs
- Service restart logs
- Unusual input patterns in application logs
Network Indicators:
- Unusual traffic spikes to OpenHarmony services
- Repeated connection attempts with malformed data
SIEM Query:
source="openharmony" AND (event_type="crash" OR event_type="service_restart")