CVE-2018-20434
LibreNMS arbitrary OS commands execution
9.8
CRITICAL
CVSS 3.1
EPSS 66.3%
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.
How to fix CVE-2018-20434
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- —no fix listed
Is CVE-2018-20434 being exploited?
Likely — EPSS is 66.3%, placing CVE-2018-20434 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (1)
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |