CVE-2020-9147
📋 TL;DR
CVE-2020-9147 is an out-of-bounds read vulnerability in Huawei smartphone component interfaces. Local attackers can exploit this by crafting malicious scenarios to read memory beyond allocated buffers, potentially exposing sensitive information. This affects Huawei smartphone users with vulnerable software versions.
💻 Affected Systems
- Huawei smartphones
📦 What is this software?
Emui by Huawei
Emui by Huawei
Emui by Huawei
Emui by Huawei
Magic Ui by Huawei
Magic Ui by Huawei
Magic Ui by Huawei
Magic Ui by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Information disclosure of sensitive data from device memory, potentially including authentication tokens, passwords, or personal information.
Likely Case
Local information disclosure allowing attackers to read adjacent memory contents, possibly leading to further exploitation.
If Mitigated
Limited impact with proper access controls and patched devices, preventing unauthorized local access.
🎯 Exploit Status
Requires local access and careful construction of attack scenarios; no public exploit code identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei security bulletins for specific patched versions
Vendor Advisory: https://consumer.huawei.com/cn/support/bulletin/2021/1
Restart Required: Yes
Instructions:
1. Check for security updates in device settings. 2. Install latest security patch from Huawei. 3. Restart device after update.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and local access to devices to reduce attack surface
🧯 If You Can't Patch
- Implement strict access controls to prevent unauthorized local access to devices
- Monitor devices for unusual local activity or privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check device software version against Huawei security bulletins for affected versionsCheck Version:
Settings > About phone > Build number/EMUI versionVerify Fix Applied:
Verify security patch level in device settings matches or exceeds patched version from Huawei advisory📡 Detection & Monitoring
Log Indicators:
- Unusual local process activity
- Memory access violations in system logs
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Not applicable for local memory read vulnerabilities