CVE-2024-20129
📋 TL;DR
This CVE describes an out-of-bounds read vulnerability in MediaTek telephony components that could allow remote denial of service attacks. The vulnerability requires no user interaction or special privileges to exploit. Devices using affected MediaTek chipsets with vulnerable telephony firmware are at risk.
💻 Affected Systems
- MediaTek telephony components/chipsets
📦 What is this software?
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Remote attackers could crash telephony services, disrupting voice calls, SMS, and mobile data connectivity on affected devices.
Likely Case
Remote denial of service causing temporary loss of telephony functionality until device restart.
If Mitigated
Minimal impact if patched; unpatched devices remain vulnerable to service disruption.
🎯 Exploit Status
Exploitation requires understanding of telephony protocols and memory layout. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to MediaTek advisory ALPS09289881 for specific patched versions
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/December-2024
Restart Required: Yes
Instructions:
1. Check with device manufacturer for firmware updates. 2. Apply MediaTek-provided patch ALPS09289881. 3. Reboot device after update. 4. Verify patch installation.
🔧 Temporary Workarounds
Network segmentation
allRestrict network access to telephony services from untrusted networks
🧯 If You Can't Patch
- Implement strict network filtering to limit access to telephony services
- Monitor for telephony service crashes and implement automated recovery procedures
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against MediaTek advisory; devices with unpatched telephony firmware are vulnerableCheck Version:
Device-specific commands vary by manufacturer; typically in Settings > About Phone > Software InformationVerify Fix Applied:
Verify patch ALPS09289881 is applied by checking firmware version or patch status📡 Detection & Monitoring
Log Indicators:
- Unexpected telephony service crashes
- Modem/telephony subsystem restarts
- Memory access violation logs in telephony components
Network Indicators:
- Unusual telephony protocol traffic patterns
- Unexpected connection attempts to telephony services
SIEM Query:
source="telephony" AND (event="crash" OR event="restart" OR error="memory_access")