Proof of concept
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12 Dec 2019
11 Dec 2019
How to fix?
npm to version 6.13.3 or higher.
Affected versions of this package are vulnerable to Unauthorized File Access. It is possible for packages to create symlinks to files outside of the
node_modules folder through the
bin field upon installation.
npm, 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 behaviour is possible through install scripts. This vulnerability bypasses a user using the
--ignore-scripts install option.