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CVE-2019-16777

7.7 · HIGH

Versions of the npm CLI prior to 6.13.4 are vulnerable to an Arbitrary File Overwrite.

Published Dec 13, 2019CWE-22EPSS 2.13%

Overview

CVE-2019-16777 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 6.13.4 are vulnerable to an Arbitrary File Overwrite. It fails to prevent existing globally-installed binaries to be overwritten by other package installations. For example, if a package was installed globally and created a serve binary, any subsequent installs of packages that also create a serve binary would overwrite the previous serve binary. This behavior is still allowed in local installations and also 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-4328-8hgf-7wjrReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z36UKPO5F3PQ3Q2POMF5LEKXWAH5RUFP/Refsecurity.gentoo.org/glsa/202003-48

How CyberStrike helps

Frequently asked questions

What is CVE-2019-16777?

CVE-2019-16777 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-2019-16777?

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-2019-16777?

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-2019-16777?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-16777 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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