CVE-2023-32475
📋 TL;DR
Dell BIOS contains a missing integrity check vulnerability that allows attackers with physical access to bypass security mechanisms and execute arbitrary code. This affects Dell systems with vulnerable BIOS versions, primarily those with AMD processors. Physical access is required for exploitation.
💻 Affected Systems
- Dell systems with AMD processors
📦 What is this software?
Alienware Aurora Ryzen Edition R14 Firmware by Dell
View all CVEs affecting Alienware Aurora Ryzen Edition R14 Firmware →
Alienware M15 Ryzen Edition R5 Firmware by Dell
View all CVEs affecting Alienware M15 Ryzen Edition R5 Firmware →
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains full system control, installs persistent malware, steals sensitive data, and bypasses all security controls including disk encryption.
Likely Case
Attacker with physical access installs bootkits or firmware-level malware that persists across OS reinstalls and evades detection.
If Mitigated
With proper physical security controls, the risk is significantly reduced as physical access is required for exploitation.
🎯 Exploit Status
Requires physical access and BIOS/UEFI manipulation knowledge. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: BIOS updates specified in Dell advisory DSA-2023-222
Vendor Advisory: https://www.dell.com/support/kbdoc/en-us/000215644/dsa-2023-222-security-update-for-an-amd-bios-vulnerability
Restart Required: Yes
Instructions:
1. Identify your Dell system model and current BIOS version. 2. Visit Dell Support website. 3. Download the BIOS update for your specific model. 4. Run the update executable with administrator privileges. 5. Restart the system when prompted.
🔧 Temporary Workarounds
Enhanced Physical Security
allImplement strict physical access controls to prevent unauthorized physical access to systems.
BIOS Password Protection
allSet strong BIOS/UEFI passwords to prevent unauthorized BIOS modifications.
🧯 If You Can't Patch
- Implement strict physical security controls and monitoring for affected systems
- Consider retiring or replacing systems that cannot be patched
🔍 How to Verify
Check if Vulnerable:
Check BIOS version in system settings or using 'wmic bios get smbiosbiosversion' on Windows or 'dmidecode -s bios-version' on Linux, then compare with Dell advisory.Check Version:
Windows: wmic bios get smbiosbiosversion | Linux: dmidecode -s bios-versionVerify Fix Applied:
Verify BIOS version after update matches patched version in Dell advisory.📡 Detection & Monitoring
Log Indicators:
- BIOS/UEFI modification events in system logs
- Unexpected system restarts or boot sequence changes
Network Indicators:
- No network indicators - physical access required
SIEM Query:
Search for BIOS/UEFI firmware modification events or unexpected secure boot violations