CVE-2024-27376
📋 TL;DR
This vulnerability in Samsung Exynos mobile processors allows attackers to perform heap overwrite attacks by exploiting missing input validation in the slsi_nan_subscribe_get_nl_params() function. It affects devices using Exynos 980, 850, 1280, 1380, and 1330 chipsets. Successful exploitation could lead to arbitrary code execution or system crashes.
💻 Affected Systems
- Samsung Mobile Processor Exynos 980
- Samsung Mobile Processor Exynos 850
- Samsung Mobile Processor Exynos 1280
- Samsung Mobile Processor Exynos 1380
- Samsung Mobile Processor Exynos 1330
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise with kernel-level code execution, allowing complete control over affected mobile devices.
Likely Case
Device instability, crashes, or denial of service leading to reboots and potential data corruption.
If Mitigated
Limited impact with proper input validation and memory protection mechanisms in place.
🎯 Exploit Status
Requires local access or ability to execute code on the device. Exploitation involves crafting specific inputs to trigger the heap overwrite.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Samsung security updates for specific device models
Vendor Advisory: https://semiconductor.samsung.com/support/quality-support/product-security-updates/
Restart Required: Yes
Instructions:
1. Check for security updates in device settings. 2. Apply available firmware updates from Samsung. 3. Reboot device after update installation. 4. Verify update was successful.
🔧 Temporary Workarounds
Disable vulnerable services
androidRestrict or disable services using the affected slsi_nan_subscribe_get_nl_params() function if possible
Application sandboxing
androidImplement strict app permissions and sandboxing to limit potential exploit vectors
🧯 If You Can't Patch
- Isolate affected devices from critical networks and sensitive data
- Implement strict application whitelisting and only install trusted apps from official stores
🔍 How to Verify
Check if Vulnerable:
Check device chipset model in Settings > About Phone > Hardware Information. If using affected Exynos chipsets, assume vulnerable until patched.Check Version:
adb shell getprop ro.boot.hardware (for Exynos chipset check) and adb shell getprop ro.build.version.security_patch (for patch level)Verify Fix Applied:
Check security patch level in Settings > About Phone > Software Information. Verify latest Samsung security updates are installed.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Memory corruption errors in system logs
- Unexpected process crashes related to network services
Network Indicators:
- Unusual local network activity from mobile devices
- Suspicious inter-process communication attempts
SIEM Query:
Search for kernel panic events, memory corruption errors, or unexpected process terminations on mobile devices