CVE-2022-23803
📋 TL;DR
A stack-based buffer overflow vulnerability in KiCad's Gerber/Excellon file parsers allows remote code execution when processing malicious files. Users who open untrusted Gerber or Excellon files in KiCad EDA are affected. This could lead to complete system compromise.
💻 Affected Systems
- KiCad EDA
📦 What is this software?
Eda by Kicad
Fedora by Fedoraproject
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control of the user's system through arbitrary code execution.
Likely Case
Local privilege escalation or malware installation when users open malicious files from untrusted sources.
If Mitigated
Limited impact if users only open trusted files and have proper file validation controls.
🎯 Exploit Status
Exploitation requires user interaction to open malicious file. Talos Intelligence published detailed analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: KiCad 6.0.2 and later
Vendor Advisory: https://www.kicad.org/
Restart Required: Yes
Instructions:
1. Download KiCad 6.0.2 or later from official website. 2. Uninstall previous version. 3. Install updated version. 4. Restart system.
🔧 Temporary Workarounds
File validation
allOnly open Gerber/Excellon files from trusted sources and validate file integrity before opening.
Sandbox execution
allRun KiCad in isolated environment or virtual machine when processing untrusted files.
🧯 If You Can't Patch
- Disable Gerber/Excellon file support if not needed
- Implement application whitelisting to prevent unauthorized KiCad execution
🔍 How to Verify
Check if Vulnerable:
Check KiCad version: Help → About KiCad → Version tab. If version is 6.0.1 or earlier, system is vulnerable.Check Version:
kicad --version (Linux/macOS) or check About dialog in GUIVerify Fix Applied:
Verify version is 6.0.2 or later. Test with known safe Gerber/Excellon files to ensure functionality.📡 Detection & Monitoring
Log Indicators:
- KiCad crash logs with stack overflow errors
- Unexpected process creation from KiCad
Network Indicators:
- Unusual outbound connections from KiCad process
SIEM Query:
process_name:"kicad" AND (event_type:"crash" OR parent_process:!="explorer.exe")🔗 References
- https://lists.debian.org/debian-lts-announce/2022/05/msg00009.html
- https://lists.debian.org/debian-lts-announce/2022/08/msg00010.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5EMCGSSP3FIWCSL2KXVXLF35JYZKZE5Q/
- https://talosintelligence.com/vulnerability_reports/TALOS-2022-1453
- https://www.debian.org/security/2022/dsa-5214
- https://lists.debian.org/debian-lts-announce/2022/05/msg00009.html
- https://lists.debian.org/debian-lts-announce/2022/08/msg00010.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5EMCGSSP3FIWCSL2KXVXLF35JYZKZE5Q/
- https://talosintelligence.com/vulnerability_reports/TALOS-2022-1453
- https://www.debian.org/security/2022/dsa-5214
