CVE-2020-9263
📋 TL;DR
This is a use-after-free vulnerability in specific Huawei smartphone models that allows attackers to execute arbitrary code. Attackers need to trick users into running a malicious application with standard user privileges. Affected devices include Huawei Mate 30 and P30 smartphones running vulnerable firmware versions.
💻 Affected Systems
- Huawei Mate 30
- Huawei P30
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise with attacker gaining code execution capabilities, potentially leading to data theft, surveillance, or device takeover.
Likely Case
Limited code execution within the context of the malicious application, potentially allowing data access or further privilege escalation.
If Mitigated
No impact if devices are patched or if users don't install untrusted applications.
🎯 Exploit Status
Requires social engineering to trick users into installing malicious apps; exploit requires specific memory manipulation conditions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Mate 30: 10.1.0.150(C00E136R5P3) or later; P30: 10.1.0.160(C00E160R2P11) or later
Vendor Advisory: https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200701-07-smartphone-en
Restart Required: Yes
Instructions:
1. Go to Settings > System & updates > Software update. 2. Check for updates. 3. Download and install available updates. 4. Restart device when prompted.
🔧 Temporary Workarounds
Restrict app installations
allOnly install applications from trusted sources like official app stores
Enable app verification
allTurn on Google Play Protect or Huawei AppGallery security features
🧯 If You Can't Patch
- Restrict device to only install apps from official app stores
- Implement mobile device management (MDM) policies to control app installations
🔍 How to Verify
Check if Vulnerable:
Check Settings > About phone > Build number and compare with vulnerable versionsCheck Version:
adb shell getprop ro.build.display.id (for connected devices)Verify Fix Applied:
Verify Build number matches or exceeds patched versions: Mate 30: 10.1.0.150(C00E136R5P3) or later; P30: 10.1.0.160(C00E160R2P11) or later📡 Detection & Monitoring
Log Indicators:
- Unexpected application crashes
- Memory access violations in system logs
Network Indicators:
- Unusual outbound connections from mobile apps
SIEM Query:
Device logs showing installation of untrusted applications followed by system instability