CVE-2019-16775

Description

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.

Weakness classification

• CWE-59: Improper Link Resolution Before File Access ('Link Following')
• CWE-61: UNIX Symbolic Link (Symlink) Following

Primary references

• security-advisories@github.com — Mailing List, Third Party Advisory
• security-advisories@github.com — Third Party Advisory
• security-advisories@github.com — Third Party Advisory
• security-advisories@github.com — Third Party Advisory
• security-advisories@github.com — Third Party Advisory
• security-advisories@github.com — Third Party Advisory
• security-advisories@github.com — Third Party Advisory
• security-advisories@github.com — Third Party Advisory
• security-advisories@github.com
• security-advisories@github.com — Third Party Advisory
• security-advisories@github.com — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory