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.

Remediation

References

https://github.com/yarnpkg/yarn/issues/7761#issuecomment-565493023

https://github.com/yarnpkg/yarn/commit/039bafd74b7b1a88a53a54f8fa6fa872615e90e7

https://blog.daniel-ruf.de/critical-design-flaw-npm-pnpm-yarn/

https://access.redhat.com/errata/RHSA-2020:0475

https://snyk.io/vuln/SNYK-JS-YARN-537806%2C

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/

Related Vulnerabilities

CVE-2022-31069 Vulnerability in npm package @ffdc/nestjs-proxy

CVE-2022-24289 Vulnerability in maven package org.apache.cayenne:cayenne-server

CVE-2020-8441 Vulnerability in maven package org.jyaml:jyaml

CVE-2020-7727 Vulnerability in npm package gedi

CVE-2019-1010091 Vulnerability in npm package tinymce

Severity

High

Classification

CWE-59 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Tags

Exploit Third Party Advisory Patch