CVE-2022-48494
📋 TL;DR
This vulnerability allows malicious apps to bypass identity verification during pre-authorization, potentially gaining unauthorized access to system resources. It affects Huawei devices with lax app verification in their pre-authorization function, primarily impacting users of specific Huawei software versions.
💻 Affected Systems
- Huawei devices with pre-authorization functionality
📦 What is this software?
Emui by Huawei
Emui by Huawei
Emui by Huawei
Emui by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Malicious apps could gain elevated privileges, access sensitive data, or perform unauthorized actions on the device, leading to data theft or system compromise.
Likely Case
Attackers could deploy malicious apps that bypass security checks, resulting in unauthorized app installations or privilege escalation in controlled environments.
If Mitigated
With strict app verification controls and updated software, the risk is minimized, preventing unauthorized app pre-authorization and limiting potential damage.
🎯 Exploit Status
Exploitation requires user to install a malicious app, making it dependent on social engineering or compromised app sources.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patches included in updates released in June 2023; specific version numbers not provided in references.
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2023/6/
Restart Required: Yes
Instructions:
1. Check for updates in device settings. 2. Install the latest security patch from Huawei. 3. Restart the device to apply changes.
🔧 Temporary Workarounds
Disable Unknown Sources
androidPrevent installation of apps from unknown sources to reduce risk of malicious app deployment.
Navigate to Settings > Security > Install unknown apps and disable for all apps
Use App Verification Tools
androidEnable built-in app verification features to check app integrity before installation.
Enable 'Verify apps' in Settings > Google > Security > Google Play Protect
🧯 If You Can't Patch
- Restrict app installations to trusted sources only, such as official app stores.
- Monitor device for unusual app behavior or unauthorized pre-authorization attempts.
🔍 How to Verify
Check if Vulnerable:
Check device security patch level in Settings > About phone > Build number; if before June 2023, it may be vulnerable.Check Version:
On device, use: adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify that the security patch level is dated June 2023 or later in device settings.📡 Detection & Monitoring
Log Indicators:
- Log entries showing unauthorized app pre-authorization or failed identity verification attempts
Network Indicators:
- Unusual network traffic from apps that bypassed verification, but this is less likely as it's a local issue
SIEM Query:
Not applicable; this is primarily a device-level vulnerability with limited network indicators.