CVE-2021-40343

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in Nagios XI 5.8.5. Insecure file permissions on the nagios_unbundler.py file allow the nagios user to elevate their privileges to the root user.

Se ha detectado un problema en Nagios XI versión 5.8.5.Unos permisos de archivo no seguros en el archivo nagios_unbundler.py permiten al usuario de nagios elevar sus privilegios al usuario root

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-31 CVE Reserved
2021-10-26 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-732: Incorrect Permission Assignment for Critical Resource

CAPEC

References (3)

URL	Tag	Source
https://synacktiv.com	Not Applicable

URL	Date	SRC
https://www.synacktiv.com/sites/default/files/2021-10/Nagios_XI_multiple_vulnerabilities_0.pdf	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT	2021-11-01

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Nagios Search vendor "Nagios"		Nagios Xi Search vendor "Nagios" for product "Nagios Xi"				5.8.5 Search vendor "Nagios" for product "Nagios Xi" and version "5.8.5"		-		Affected