CVE-2018-20434 — Vulnerability in librenms/librenms — CVE Details

CRITICAL

LibreNMS arbitrary OS commands execution

Published May 24, 2022Updated April 24, 2024Source: osv

Summary

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.

Advisory Timeline

First published May 24, 2022 (1602 days ago).
Last revised April 24, 2024 — 701 days after initial publication.

Affected Packages (1)

Affects 1 ecosystem: packagist (1).

Package	Ecosystem	Affected	Fixed In
librenms/librenms	packagist	1.46	No fix available

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-78
OS Command InjectionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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

References

Frequently Asked Questions

What is CVE-2018-20434?: LibreNMS arbitrary OS commands execution This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2018-20434?: CVE-2018-20434 affects librenms/librenms. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2018-20434 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-62q7-qj6g-gvr7

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