CVE-2024-20107
📋 TL;DR
CVE-2024-20107 is an out-of-bounds read vulnerability in MediaTek's da component that allows local attackers to read memory beyond allocated buffers without authentication or user interaction. This leads to information disclosure of potentially sensitive data. The vulnerability affects devices using MediaTek chipsets with the vulnerable da component.
💻 Affected Systems
- MediaTek chipset-based devices (smartphones, tablets, IoT devices)
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
Openwrt by Openwrt
Openwrt by Openwrt
Openwrt by Openwrt
Rdk B by Rdkcentral
Rdk B by Rdkcentral
Yocto by Linuxfoundation
⚠️ Risk & Real-World Impact
Worst Case
An attacker could read sensitive kernel memory, potentially exposing cryptographic keys, passwords, or other protected data that could facilitate further attacks.
Likely Case
Local information disclosure where an attacker with physical or shell access can read adjacent memory contents, potentially exposing system information or application data.
If Mitigated
With proper access controls and SELinux/app sandboxing, impact is limited to reading non-sensitive memory regions within the da process context.
🎯 Exploit Status
Exploitation requires local code execution; no authentication bypass but no user interaction needed once code is running.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS09124360
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/November-2024
Restart Required: Yes
Instructions:
1. Check with device manufacturer for firmware updates. 2. Apply MediaTek-provided patch ALPS09124360. 3. Update device firmware through official channels. 4. Reboot device after update.
🔧 Temporary Workarounds
Restrict da component permissions
linuxLimit the daemon's capabilities and memory access through SELinux policies or app sandboxing
# Requires custom SELinux policy modifications
# Consult device manufacturer for specific policy adjustments
🧯 If You Can't Patch
- Implement strict access controls to prevent unauthorized local code execution
- Monitor for suspicious local process activity and memory access patterns
🔍 How to Verify
Check if Vulnerable:
Check device firmware version and patch level; consult manufacturer for specific vulnerability statusCheck Version:
# Device-specific; typically in Settings > About Phone > Build NumberVerify Fix Applied:
Verify patch ALPS09124360 is applied in firmware version details📡 Detection & Monitoring
Log Indicators:
- Unusual da process memory access patterns
- SELinux denials related to da component
Network Indicators:
- None - local vulnerability only
SIEM Query:
process_name:"da" AND memory_access:anomalous