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How the CVE Works
CVE-2025-4043 allows an admin user to improperly modify the `/etc/rc.local` file, which executes during system boot. The vulnerability arises from insufficient permission validation, enabling privilege escalation or persistence via malicious boot-time execution. Attackers with admin access can insert arbitrary commands, leading to system compromise upon reboot. The issue stems from weak file ownership controls and improper access restrictions on critical system files.
DailyCVE Form
Platform: Linux
Version: Multiple
Vulnerability: Unauthorized write access
Severity: Medium
Date: 06/23/2025
Prediction: Patch expected by 08/2025
What Undercode Say
Analytics:
grep -r "rc.local" /etc chmod 750 /etc/rc.local
Exploit:
echo "malicious_command" >> /etc/rc.local
Protection from this CVE:
chown root:root /etc/rc.local chmod 700 /etc/rc.local
Impact:
- Persistence
- Privilege escalation
- System compromise
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
