CVE-2018-20434

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 v3.0 9.8 CRITICAL
CVSS v2.0 10.0 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

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

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

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

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Configurations

Configuration 1 (hide)

cpe:2.3:a:librenms:librenms:1.46:*:*:*:*:*:*:*

Information

Published : 2019-04-24 14:29

Updated : 2019-06-04 16:29

NVD link : CVE-2018-20434

Mitre link : CVE-2018-20434

JSON object : View

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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Products Affected

librenms

librenms

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