CVE-2024-22429
📋 TL;DR
Dell BIOS contains an improper input validation vulnerability that allows a local authenticated malicious user with admin privileges to execute arbitrary code. This affects Dell systems with vulnerable BIOS versions. Attackers could gain persistent control over affected systems.
💻 Affected Systems
- Dell systems with vulnerable BIOS versions
📦 What is this software?
Latitude 12 Rugged Extreme 7214 Firmware by Dell
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Latitude 7212 Rugged Extreme Tablet Firmware by Dell
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Latitude 7424 Rugged Extreme Firmware by Dell
View all CVEs affecting Latitude 7424 Rugged Extreme Firmware →
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with persistent malware installation at BIOS level, allowing attackers to maintain control even after OS reinstallation.
Likely Case
Local privilege escalation leading to full system control, data theft, and lateral movement capabilities within the network.
If Mitigated
Limited impact if proper privilege separation and BIOS write protection are enforced, though risk remains for admin users.
🎯 Exploit Status
Requires local admin access and knowledge of BIOS exploitation techniques. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: BIOS updates specified in Dell advisory DSA-2024-020
Vendor Advisory: https://www.dell.com/support/kbdoc/en-us/000221102/dsa-2024-020
Restart Required: Yes
Instructions:
1. Identify your Dell system model and current BIOS version. 2. Visit Dell Support website. 3. Download appropriate BIOS update for your system. 4. Run BIOS update executable. 5. Restart system when prompted.
🔧 Temporary Workarounds
Restrict BIOS Access
allImplement BIOS password protection and restrict physical access to systems
Least Privilege Enforcement
allLimit administrative privileges to essential personnel only
🧯 If You Can't Patch
- Implement strict access controls to prevent unauthorized local admin access
- Enable BIOS write protection features if available in your system
🔍 How to Verify
Check if Vulnerable:
Check BIOS version against affected versions in Dell advisory DSA-2024-020Check Version:
Windows: wmic bios get smbiosbiosversion
Linux: sudo dmidecode -s bios-versionVerify Fix Applied:
Verify BIOS version has been updated to patched version specified in advisory📡 Detection & Monitoring
Log Indicators:
- BIOS update logs
- Failed BIOS modification attempts
- Unexpected system restarts
Network Indicators:
- Unusual BIOS update traffic from unexpected sources
SIEM Query:
EventID=12 OR EventID=13 (System startup/shutdown) correlated with BIOS-related events