CVE-2018-20434
CVE-2018-20434
Vexday Risk Score
60Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
Exploit maturity
Functional exploit
Popular PoC on GitHub (9 stars) — exploitation code widely available.
CVSS —EPSS 71.5%KEV nãoPoC públicaNuclei —Metasploit simPatch —
Lifecycle
16 Dec 2018Metasploit module available
24 Apr 2019Published on NVD
25 Apr 2019Public PoC
Weaponization speed
1 daysto first PoC
Weaponized quickly — attackers prioritized this vulnerability. Patch urgently.
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
Affected products
n/a · n/apublic PoCs found — 5
githubgithub.com/mhaskar/CVE-2018-20434★ 9cve_referencepacketstormsecurity.com/files/153188/LibreNMS-addhost-Command-Injection.htmlunverifiedcve_referencepacketstormsecurity.com/files/153448/LibreNMS-1.46-addhost-Remote-Code-Execution.htmlunverifiedexploitdbwww.exploit-db.com/exploits/46970unverifiedexploitdbwww.exploit-db.com/exploits/47044unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
http://packetstormsecurity.com/files/153188/LibreNMS-addhost-Command-Injection.htmlhttp://packetstormsecurity.com/files/153448/LibreNMS-1.46-addhost-Remote-Code-Execution.htmlhttps://drive.google.com/file/d/1LcGmOY8x-TG-wnNr-cM_f854kxk0etva/view?usp=sharinghttps://gist.github.com/mhaskar/516df57aafd8c6e3a1d70765075d372dhttps://shells.systems/librenms-v1-46-remote-code-execution-cve-2018-20434/