CVE-2020-1806
📋 TL;DR
This vulnerability affects Huawei Honor V10 smartphones where certain driver programs fail to properly validate parameters, leading to out-of-bounds read vulnerabilities. Successful exploitation could result in information disclosure or service disruption. Only Huawei Honor V10 smartphones running versions earlier than 10.0.0.156(C00E156R2P4) are affected.
💻 Affected Systems
- Huawei Honor V10 smartphones
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could read sensitive information from kernel memory, potentially exposing credentials, encryption keys, or other protected data, leading to complete device compromise.
Likely Case
Information disclosure from kernel memory, potentially exposing some system information or causing application/service crashes.
If Mitigated
With proper patching, no impact as the vulnerability is addressed in the driver validation logic.
🎯 Exploit Status
Exploitation requires local access to the device and knowledge of driver interaction. No public exploit code has been disclosed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.0.0.156(C00E156R2P4) or later
Vendor Advisory: https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200422-02-smartphone-en
Restart Required: Yes
Instructions:
1. Navigate to Settings > System > System update on the Huawei Honor V10. 2. Check for available updates. 3. Download and install version 10.0.0.156(C00E156R2P4) or later. 4. Restart the device after installation completes.
🔧 Temporary Workarounds
Restrict physical access
allLimit physical access to devices to prevent local exploitation attempts.
Disable unnecessary services
allDisable any unnecessary services or applications that might interact with vulnerable drivers.
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement strict access controls and monitoring for device usage
🔍 How to Verify
Check if Vulnerable:
Check the device version in Settings > About phone > Build number. If the version is earlier than 10.0.0.156(C00E156R2P4), the device is vulnerable.Check Version:
adb shell getprop ro.build.display.id (if ADB debugging is enabled)Verify Fix Applied:
After updating, verify the build number shows 10.0.0.156(C00E156R2P4) or later in Settings > About phone > Build number.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Driver crash reports in system logs
- Unexpected memory access errors
Network Indicators:
- Unusual local privilege escalation attempts
- Suspicious local process interactions
SIEM Query:
Device logs showing kernel driver crashes or privilege escalation attempts on Huawei Honor V10 devices