Nagios XI < 5.7.5 Multiple Vulnerabilities

high Nessus Plugin ID 150055
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote host has a web application affected by multiple vulnerabilities.


According to the self-reported version of Nagios XI, the remote host is affected by multiple vulnerabilities, including the following:

- Improper input validation in the Auto-Discovery component of Nagios XI before 5.7.5 allows an authenticated attacker to execute remote code. (CVE-2020-28648)

- Incorrect File Permissions in Nagios XI 5.7.5 and earlier and Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation to root. Low-privileged users are able to modify files that are included (aka sourced) by scripts executed by root. (CVE-2020-28906)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Upgrade to Nagios XI 5.7.5 or later.

See Also

Plugin Details

Severity: High

ID: 150055

File Name: nagiosxi_5_7_5.nasl

Version: 1.2

Type: remote

Family: CGI abuses

Published: 5/28/2021

Updated: 5/31/2021

Dependencies: nagios_enterprise_detect.nasl

Risk Information

CVSS Score Source: CVE-2020-28648


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 9

Temporal Score: 7

Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C

Temporal Vector: E:POC/RL:OF/RC:C


Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:nagios:nagios_xi

Required KB Items: installed_sw/nagios_xi

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/12/2020

Vulnerability Publication Date: 11/12/2020

Reference Information

CVE: CVE-2020-28648, CVE-2020-28906

IAVB: 2021-B-0030