CVE-2024-9978
📋 TL;DR
CVE-2024-9978 is an out-of-bounds read vulnerability in OpenHarmony that allows a local attacker to read memory beyond allocated buffers, potentially leaking sensitive information. This affects OpenHarmony v4.1.1 and earlier versions, impacting devices running these operating system versions.
💻 Affected Systems
- OpenHarmony
📦 What is this software?
Openharmony by Openatom
⚠️ Risk & Real-World Impact
Worst Case
Local attacker gains unauthorized access to sensitive kernel memory, potentially exposing cryptographic keys, authentication tokens, or other privileged system information
Likely Case
Local user or malicious app reads adjacent memory contents, potentially exposing application data or system information
If Mitigated
Information disclosure limited to non-sensitive data due to memory isolation and access controls
🎯 Exploit Status
Requires local access and knowledge of memory layout; no public exploit code identified
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: OpenHarmony v4.1.2 or later
Vendor Advisory: https://gitee.com/openharmony/security/blob/master/zh/security-disclosure/2024/2024-12.md
Restart Required: Yes
Instructions:
1. Check current OpenHarmony version. 2. Update to v4.1.2 or later via official update channels. 3. Reboot device after update.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and logical access to devices running vulnerable OpenHarmony versions
Application sandboxing
allEnforce strict application isolation and permissions to limit potential information leakage
🧯 If You Can't Patch
- Isolate vulnerable devices on separate network segments
- Implement strict access controls and monitoring for devices running vulnerable versions
🔍 How to Verify
Check if Vulnerable:
Check OpenHarmony version via system settings or command: getprop ro.build.version.ohosCheck Version:
getprop ro.build.version.ohosVerify Fix Applied:
Verify version is v4.1.2 or later using same command📡 Detection & Monitoring
Log Indicators:
- Unusual memory access patterns
- Process crashes with memory access violations
- Suspicious local privilege escalation attempts
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Process monitoring for abnormal memory reads or system calls related to memory access