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-2021-21290 Vulnerability in maven package io.netty:netty-transport

CVE-2023-26110 Vulnerability in npm package node-bluetooth

CVE-2020-2096 Vulnerability in maven package org.jenkins-ci.plugins:gitlab-hook

CVE-2018-5653 Vulnerability in maven package org.apache.cayenne.modeler:cayenne-modeler

CVE-2020-26256 Vulnerability in npm package fast-csv

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