CVE-2018-20434

LibreNMS - addhost Command Injection

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the $_POST['community'] parameter to html/pages/addhost.inc.php during creation of a new device, and then making a /ajax_output.php?id=capture&format=text&type=snmpwalk&hostname=localhost request that triggers html/includes/output/capture.inc.php command mishandling.

LibreNMS 1.46 permite a los atacantes remotos ejecutar comandos OS arbitrarios mediante el uso del parámetro $_POST['community'] en html/pages/addhost.inc.php durante la creación de un nuevo dispositivo y posteriormente haciendo una petición /ajax_output.php?id=capture&format=text&type=snmpwalk&hostname=localhost que desencadene una mala gestión del comando html/includes/output/capture.inc.php

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

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

2018-12-24 CVE Reserved
2019-04-24 CVE Published
2019-04-25 First Exploit
2024-08-05 CVE Updated
2024-10-24 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CAPEC

References (7)

URL	Tag	Source
http://packetstormsecurity.com/files/153188/LibreNMS-addhost-Command-Injection.html	X_refsource_misc
http://packetstormsecurity.com/files/153448/LibreNMS-1.46-addhost-Remote-Code-Execution.html	X_refsource_misc

URL	Date	SRC
https://www.exploit-db.com/exploits/46970	2019-06-05
https://www.exploit-db.com/exploits/47044	2019-06-28
https://github.com/mhaskar/CVE-2018-20434	2019-04-25
https://gist.github.com/mhaskar/516df57aafd8c6e3a1d70765075d372d	2024-08-05
https://shells.systems/librenms-v1-46-remote-code-execution-cve-2018-20434	2024-08-05

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Librenms Search vendor "Librenms"		Librenms Search vendor "Librenms" for product "Librenms"				1.46 Search vendor "Librenms" for product "Librenms" and version "1.46"		-		Affected