Arbitrary File Write in npm

中 6.5CVE-2019-16775 · GHSA-m6cx-g6qm-p2cx · 13/12/2019 公開 · 17/06/2026 更新

要点

CVE-2019-16775 は npm (npmjs), graalvm (oracle), npm に影響する深刻度「中」 (CVSS 6.5) の脆弱性です。
今後30日間に悪用される確率（EPSS）：3.3%（全脆弱性の 88.6% より高い）。
対処：6.13.3 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
npm npmjs	`< 6.13.3`	`6.13.3`
graalvm oracle	`= 19.3.0.2= 20.3.3= 21.2.2`	修正版なし
npm npm	`< 6.13.3`	`6.13.3`

概要

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 create files on a user's system when the package is installed. It is only possible to affect files that the user running npm install has access to and it is not possible to over write files that already exist on disk.

This behavior is still possible through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.

Recommendation

Upgrade to version 6.13.3 or later.

NVD の説明

Versions of the npm CLI prior to 6.13.3 are vulnerable to an Arbitrary File Write. It is possible for packages to create symlinks to files outside of thenode_modules folder through the bin field upon installation. A properly constructed entry in the package.json bin field would allow a package publisher to create a symlink pointing 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.