Home/CVE/Versions of the npm CLI prior to 6.13.3 are vulnerable to an Arbitrary File Write. It fails to prevent access to folders
CVE

CVE-2019-16776

Versions of the npm CLI prior to 6.13.3 are vulnerable to an Arbitrary File Write. It fails to prevent access to folders

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.

HIGH · CVSS 7.7 EPSS 0.01227
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
▤

Affected Products & Versions

6
npmjs npm< 6.13.3
opensuse leapall versions
oracle graalvmall versions
fedoraproject fedoraall versions
redhat enterprise linuxall versions
redhat enterprise linux eusall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
npm npm HIGH fixed in 6.13.3
▣

Scoring & Timeline

7.7
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Dec 2019 · 01:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
⚑

Vendor Advisories

13
rhsaRHSA-2020:2625Moderate
rhsaRHSA-2020:1475Moderate
rhsaRHSA-2020:0597Important
rhsaRHSA-2020:0602Important
rhsaRHSA-2020:0579Important
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00027.htmlMailing ListThird Party Advisory
https://blog.npmjs.org/post/189618601100/binary-planting-with-the-npm-cliThird Party Advisory
https://github.com/npm/cli/security/advisories/GHSA-x8qc-rrcw-4r46Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z36UKPO5F3PQ3Q2POMF5LEKXWAH5RUFP/
https://www.oracle.com/security-alerts/cpujan2020.htmlThird Party Advisory
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