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CVE-2019-16776

7.7 · HIGH

Versions of the npm CLI prior to 6.13.3 are vulnerable to an Arbitrary File Write.

Published Dec 13, 2019CWE-22EPSS 3.42%

Overview

CVE-2019-16776 is a high-severity vulnerability. It was published on December 13, 2019 and has a CVSS 3.1 base score of 7.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Versions of the npm CLI prior to 6.13.3 are vulnerable to an Arbitrary File Write. It fails to prevent access to folders outside of the intended node_modules folder through the bin field. A properly constructed entry in the package.json bin field would allow a package publisher to modify and/or gain access to arbitrary files on a user's system when the package is installed. This behavior is still possible through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2020-01/msg00027.htmlRefaccess.redhat.com/errata/RHEA-2020:0330Refaccess.redhat.com/errata/RHSA-2020:0573Refaccess.redhat.com/errata/RHSA-2020:0579Refaccess.redhat.com/errata/RHSA-2020:0597Refaccess.redhat.com/errata/RHSA-2020:0602Refblog.npmjs.org/post/189618601100/binary-planting-with-the-npm-cliGitHubgithub.com/npm/cli/security/advisories/GHSA-x8qc-rrcw-4r46Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z36UKPO5F3PQ3Q2POMF5LEKXWAH5RUFP/Refwww.oracle.com/security-alerts/cpujan2020.html

How CyberStrike helps

Frequently asked questions

What is CVE-2019-16776?

CVE-2019-16776 is a high-severity vulnerability. It was published on December 13, 2019 and has a CVSS 3.1 base score of 7.7 (HIGH).

How severe is CVE-2019-16776?

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-16776?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-16776?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-16776 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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