CVE-2018-20434

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    CVE-2018-20434

    Published: 24 Apr 2019Last Modified: 8 Jul 2026

    Summary:

    Details: 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.

    References: 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/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- bd5e692dc778ff7e7e05e5765baa2ad584154589
    Fixed -None

    Affected versions

    1.46

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2018-20434 | CVE-DB