Description
In Yarn before 1.21.1, the package install functionality can be abused to generate arbitrary symlinks on the host filesystem by using specially crafted "bin" keys. Existing files could be overwritten depending on the current user permission set.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a Yarn
All versions prior to version 1.21.1affected
References
- https://snyk.io/vuln/SNYK-JS-YARN-537806%2C ↗
- https://github.com/yarnpkg/yarn/commit/039bafd74b7b1a88a53a54f8fa6fa872615e90e7 ↗
- https://github.com/yarnpkg/yarn/issues/7761#issuecomment-565493023 ↗
- https://blog.daniel-ruf.de/critical-design-flaw-npm-pnpm-yarn/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITY5BC63CCC647DFNUQRQ5AJDKUKUNBI/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3HIZW4NZVV5QY5WWGW2JRP3FHYKZ6ZJ5/ ↗
- https://access.redhat.com/errata/RHSA-2020:0475 ↗