CVE-2020-28906

Nagios XI / Fusion Privilege Escalation / Cross Site Scripting / Code Execution

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Los Permisos de Archivo Incorrectos en Nagios XI versiones 5.7.5 y anteriores y Nagios Fusion versiones 4.1.8 y anteriores, permiten una Escalada de Privilegios a root. Los usuarios pocos privilegiados pueden modificar archivos que son incluidos (también se conoce como de origen) mediante scripts ejecutados por root

Skylight Cyber has identified a total of 13 vulnerabilities in Nagios XI and Nagios Fusion servers. These include remote code execution, cross site scripting, privilege escalation, and more.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-11-17 CVE Reserved
2021-05-24 CVE Published
2021-05-26 First Exploit
2024-08-04 CVE Updated
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-276: Incorrect Default Permissions

CAPEC

References (4)

URL	Tag	Source
http://packetstormsecurity.com/files/162783/Nagios-XI-Fusion-Privilege-Escalation-Cross-Site-Scripting-Code-Execution.html	Third Party Advisory
https://skylightcyber.com/2021/05/20/13-nagios-vulnerabilities-7-will-shock-you	Third Party Advisory

URL	Date	SRC
https://packetstorm.news/files/id/162783	2021-05-26

URL	Date	SRC

URL	Date	SRC
https://www.nagios.com/downloads/nagios-xi/change-log	2021-05-28

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Nagios Search vendor "Nagios"		Fusion Search vendor "Nagios" for product "Fusion"				<= 4.1.8 Search vendor "Nagios" for product "Fusion" and version " <= 4.1.8"		-		Affected
Nagios Search vendor "Nagios"		Nagios Xi Search vendor "Nagios" for product "Nagios Xi"				<= 5.7.5 Search vendor "Nagios" for product "Nagios Xi" and version " <= 5.7.5"		-		Affected