CVE-2019-20384

Name: CVE-2019-20384
Creator: NVD / NIST
Published: 2020-01-21T00:15:14.563+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2019-20384 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Gentoo Portage through 2.3.84 allows local users to place a Trojan horse plugin in the /usr/lib64/nagios/plugins directory by leveraging access to the nagios user account, because this directory is writable in between a call to emake and a call to fowners.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

Description

Gentoo Portage through 2.3.84 allows local users to place a Trojan horse plugin in the /usr/lib64/nagios/plugins directory by leveraging access to the nagios user account, because this directory is writable in between a call to emake and a call to fowners.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.27%

18.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-362

Affected Software

Vendor	Product	Versions
Gentoo	Portage	<= 2.3.84

References

http://www.openwall.com/lists/oss-security/2020/01/21/1Exploit, Mailing List, Third Party Advisory
https://bugs.gentoo.org/692492Exploit, Issue Tracking, Vendor Advisory
http://www.openwall.com/lists/oss-security/2020/01/21/1Exploit, Mailing List, Third Party Advisory
https://bugs.gentoo.org/692492Exploit, Issue Tracking, Vendor Advisory

Timeline

Published: Jan 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20384?

How severe is CVE-2019-20384?

CVE-2019-20384 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20384?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-20384?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST