CVE-2024-0179
📋 TL;DR
This vulnerability allows locally authenticated attackers to exploit a System Management Mode (SMM) callout in AMD's CPM Display Feature driver to overwrite SMRAM memory. This could lead to arbitrary code execution with high privileges. Systems with affected AMD processors and firmware are vulnerable.
💻 Affected Systems
- AMD Ryzen processors with CPM Display Feature
⚠️ 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 system compromise with SMM-level privileges, allowing attackers to bypass all security controls, install persistent malware, and access all system memory and hardware.
Likely Case
Privilege escalation from a standard user account to kernel/SMM-level access, enabling installation of rootkits, credential theft, and persistence mechanisms.
If Mitigated
Limited impact if proper access controls prevent local attacker access or if SMM protections are enhanced through firmware settings.
🎯 Exploit Status
Requires local authenticated access and knowledge of SMM exploitation techniques. SMM exploitation is complex but well-documented in security research.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware updates specified in AMD advisory SB-7027
Vendor Advisory: https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7027.html
Restart Required: Yes
Instructions:
1. Check AMD advisory for affected processor models. 2. Contact system/motherboard manufacturer for BIOS/UEFI firmware updates. 3. Apply firmware update following manufacturer instructions. 4. Reboot system to activate new firmware.
🔧 Temporary Workarounds
Restrict local access
allLimit local user access to systems with vulnerable firmware through strict access controls and privilege management.
Disable vulnerable feature if possible
allCheck BIOS/UEFI settings for CPM Display Feature or similar options and disable if not required.
🧯 If You Can't Patch
- Implement strict least-privilege access controls to limit local user accounts
- Monitor for suspicious SMM-related activity and privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check processor model and firmware version against AMD advisory. Use manufacturer tools to check current firmware version.Check Version:
wmic bios get smbiosbiosversion (Windows) or dmidecode -t bios (Linux) or system_profiler SPHardwareDataType (macOS)Verify Fix Applied:
Verify firmware version has been updated to patched version specified in AMD advisory. Check that BIOS/UEFI version matches manufacturer's patched release.📡 Detection & Monitoring
Log Indicators:
- Unexpected SMM calls
- Firmware modification attempts
- Privilege escalation from standard user to SYSTEM/SMM level
Network Indicators:
- None - this is a local exploit
SIEM Query:
EventID=4688 OR Process creation with parent-child privilege escalation patterns on systems with known vulnerable AMD processors