CVE-2023-28397

7.8 HIGH

📋 TL;DR

This vulnerability allows authenticated attackers with local access to potentially escalate privileges in systems using affected Intel Aptio V UEFI Firmware Integrator Tools. The improper access control could enable attackers to gain higher-level system privileges than intended. This affects systems where these specific Intel firmware tools are used.

💻 Affected Systems

Products:
  • Intel Aptio V UEFI Firmware Integrator Tools
Versions: Specific versions not publicly detailed in advisory; refer to Intel SA-00908 for exact affected versions
Operating Systems: Any OS running on systems with affected UEFI firmware
Default Config Vulnerable: ⚠️ Yes
Notes: Affects systems where these specific Intel firmware development tools are used to create UEFI firmware. Not all Intel systems are affected - only those using vulnerable versions of these specific tools.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise with attacker gaining firmware-level control, potentially persisting across OS reinstalls and bypassing security controls.

🟠

Likely Case

Local privilege escalation allowing authenticated users to gain administrative or system-level access on affected systems.

🟢

If Mitigated

Limited impact if proper access controls and monitoring are in place, with attackers only able to escalate within their authorized scope.

🌐 Internet-Facing: LOW - Requires local access and authentication, not directly exploitable over network.
🏢 Internal Only: HIGH - Authenticated attackers with local access can exploit this for privilege escalation on affected systems.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Requires authenticated local access and knowledge of the vulnerability. No public exploit code available as of advisory publication.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Refer to Intel SA-00908 for specific patched versions

Vendor Advisory: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00908.html

Restart Required: Yes

Instructions:

1. Check Intel SA-00908 advisory for affected versions. 2. Contact system/device manufacturer for firmware updates. 3. Apply firmware update following manufacturer instructions. 4. Reboot system to activate new firmware.

🔧 Temporary Workarounds

Restrict Local Access

all

Limit physical and remote local access to systems with affected firmware

Implement Least Privilege

all

Ensure users only have minimum necessary privileges to reduce impact of escalation

🧯 If You Can't Patch

  • Isolate affected systems from critical networks and sensitive data
  • Implement strict monitoring and logging of local access and privilege escalation attempts

🔍 How to Verify

Check if Vulnerable:

Check system firmware version and compare against Intel SA-00908 advisory. Contact system manufacturer for specific vulnerability assessment.

Check Version:

Windows: wmic bios get smbiosbiosversion
Linux: dmidecode -s bios-version
macOS: system_profiler SPHardwareDataType | grep "Boot ROM Version"

Verify Fix Applied:

Verify firmware version after update matches patched version specified in Intel advisory or manufacturer documentation.

📡 Detection & Monitoring

Log Indicators:

  • Unexpected firmware access attempts
  • Privilege escalation events
  • Unauthorized local access to system management interfaces

Network Indicators:

  • Local system management protocol anomalies

SIEM Query:

EventID=4672 OR EventID=4688 (Windows) showing privilege escalation from non-admin to admin on systems with affected firmware

🔗 References

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