CVE-2023-32871
📋 TL;DR
This vulnerability in MediaTek's DA (Download Agent) allows local attackers to bypass permission checks due to an incorrect status verification. It enables local privilege escalation without requiring user interaction or additional execution privileges. Affected systems include devices using vulnerable MediaTek chipsets.
💻 Affected Systems
- MediaTek devices using DA (Download Agent)
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
Openwrt by Openwrt
Openwrt by Openwrt
Rdk B by Rdkcentral
Yocto by Linuxfoundation
Yocto by Linuxfoundation
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise where an attacker gains root/administrator privileges, potentially installing persistent malware, accessing all user data, and bypassing all security controls.
Likely Case
Local privilege escalation allowing attackers to execute arbitrary code with elevated permissions, potentially leading to data theft, surveillance, or further system exploitation.
If Mitigated
Limited impact if proper access controls, privilege separation, and security monitoring are implemented, though the vulnerability still presents a significant risk.
🎯 Exploit Status
Exploitation requires local access but no user interaction. The vulnerability is in a system component, making reliable exploitation likely straightforward for attackers with local access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS08355514
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/May-2024
Restart Required: Yes
Instructions:
1. Contact device manufacturer for firmware updates. 2. Apply the patch with ID ALPS08355514. 3. Reboot the device after patching. 4. Verify the patch is applied through system verification.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and remote local access to vulnerable devices to reduce attack surface
Implement privilege separation
allEnsure users operate with minimal necessary privileges to limit impact of successful exploitation
🧯 If You Can't Patch
- Isolate vulnerable devices from critical networks and sensitive data
- Implement strict access controls and monitor for suspicious local privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check device specifications for MediaTek chipset usage and contact manufacturer for vulnerability statusCheck Version:
Manufacturer-specific commands vary; generally check Settings > About Phone > Build Number on Android devicesVerify Fix Applied:
Verify patch ID ALPS08355514 is applied through system update logs or manufacturer verification tools📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- DA component access attempts
- System permission changes
Network Indicators:
- Not applicable - local exploitation only
SIEM Query:
Event logs showing local privilege escalation or DA component manipulation