CVE-2018-20434 Information

Description

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.

CVSS Vector

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

Reference

http://packetstormsecurity.com/files/153188/LibreNMS-addhost-Command-Injection.html http://packetstormsecurity.com/files/153448/LibreNMS-1.46-addhost-Remote-Code-Execution.html https://drive.google.com/file/d/1LcGmOY8x-TG-wnNr-cM_f854kxk0etva/view?usp=sharing https://gist.github.com/mhaskar/516df57aafd8c6e3a1d70765075d372d https://shells.systems/librenms-v1-46-remote-code-execution-cve-2018-20434/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8