CVE-2022-38696
📋 TL;DR
CVE-2022-38696 is a critical BootRom vulnerability in Unisoc chipsets where missing payload size checks allow memory buffer overflows. This enables attackers to execute arbitrary code during the boot process before security mechanisms load. It affects devices using vulnerable Unisoc chipsets, primarily IoT devices and budget smartphones.
💻 Affected Systems
- Devices with Unisoc chipsets (Tiger T310, T610, T618, T740, SC9863A, others)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing persistent malware installation, bypassing all security controls, and potential bricking of devices.
Likely Case
Remote code execution leading to data theft, surveillance, or device enrollment in botnets.
If Mitigated
Limited impact if devices are physically secured and network access is restricted, though the vulnerability remains present.
🎯 Exploit Status
Exploitation requires specific timing during boot process but doesn't require authentication; public research demonstrates feasibility.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Device manufacturer dependent - requires firmware updates
Vendor Advisory: https://www.nccgroup.com/research-blog/there-s-another-hole-in-your-soc-unisoc-rom-vulnerabilities/
Restart Required: Yes
Instructions:
1. Contact device manufacturer for firmware updates. 2. Apply firmware updates through manufacturer's update process. 3. Verify update completion and device functionality.
🔧 Temporary Workarounds
Network segmentation
allIsolate vulnerable devices from untrusted networks
Physical security controls
allRestrict physical access to vulnerable devices
🧯 If You Can't Patch
- Replace affected devices with non-vulnerable hardware
- Implement strict network segmentation and monitoring for anomalous boot behavior
🔍 How to Verify
Check if Vulnerable:
Check device specifications for Unisoc chipset model and consult manufacturer vulnerability statusCheck Version:
Manufacturer specific - typically in device settings or via ADB commands for Android devicesVerify Fix Applied:
Verify firmware version matches manufacturer's patched version and test boot process📡 Detection & Monitoring
Log Indicators:
- Unusual boot sequence timing
- Failed boot attempts
- Unexpected firmware modification events
Network Indicators:
- Unexpected network traffic during boot process
- Communication with unknown boot servers
SIEM Query:
Device boot logs showing abnormal timing or failed verification steps