CVE-2020-14126
📋 TL;DR
This vulnerability in the Mi Sound APP allows attackers to exploit improperly secured JavaScript interfaces to access sensitive information. It affects users of Xiaomi's Mi Sound application on Android devices. The information leakage could expose personal data stored or processed by the app.
💻 Affected Systems
- Mi Sound APP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all sensitive data accessible to the Mi Sound APP, including potentially personal information, device identifiers, and app-specific data.
Likely Case
Targeted information leakage where attackers extract specific sensitive data from vulnerable devices, potentially leading to privacy violations or credential theft.
If Mitigated
Limited impact with proper app sandboxing and network controls preventing malicious JavaScript execution.
🎯 Exploit Status
Exploitation requires delivering malicious JavaScript to the vulnerable app, which could occur through various attack vectors including malicious websites or compromised apps.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in advisory
Vendor Advisory: https://trust.mi.com/zh-CN/misrc/bulletins/advisory?cveId=278
Restart Required: Yes
Instructions:
1. Open Google Play Store on Android device. 2. Search for 'Mi Sound' app. 3. If update available, tap 'Update'. 4. Restart device after update completes. 5. Verify app version is latest from Xiaomi's official channels.
🔧 Temporary Workarounds
Disable Mi Sound APP
androidTemporarily disable or uninstall the Mi Sound application until patched
adb shell pm disable-user --user 0 com.xiaomi.misound
adb uninstall com.xiaomi.misound
Restrict JavaScript Execution
androidUse Android security settings to restrict JavaScript execution in untrusted contexts
🧯 If You Can't Patch
- Isolate affected devices from untrusted networks and internet access
- Implement application whitelisting to prevent unauthorized app installations
🔍 How to Verify
Check if Vulnerable:
Check Mi Sound APP version in Android Settings > Apps > Mi Sound. If version predates Xiaomi's security patch, assume vulnerable.Check Version:
adb shell dumpsys package com.xiaomi.misound | grep versionNameVerify Fix Applied:
Verify Mi Sound APP is updated to latest version from Google Play Store and no abnormal data access occurs.📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript execution in Mi Sound APP logs
- Unexpected data access patterns from the app
Network Indicators:
- Suspicious outbound data transfers from devices with Mi Sound APP
- Unexpected connections to unknown domains
SIEM Query:
source="android_logs" app="Mi Sound" (event="javascript_execution" OR event="data_access")