Description
The package integrity validation in yarn < 1.19.0 contains a TOCTOU vulnerability where the hash is computed before writing a package to cache. It's not computed again when reading from the cache. This may lead to a cache pollution attack.
Remediation
References
https://github.com/yarnpkg/yarn/blob/master/CHANGELOG.md#1190
https://github.com/yarnpkg/yarn/commit/0474b8c66a8ea298f5e4dedc67b2de464297ad1c
https://hackerone.com/reports/703138
Related Vulnerabilities
CVE-2020-36188 Vulnerability in maven package com.fasterxml.jackson.core:jackson-databind
CVE-2022-25869 Vulnerability in maven package org.webjars.npm:angular
CVE-2021-33036 Vulnerability in maven package org.apache.hadoop:hadoop-yarn-server-common
CVE-2019-18350 Vulnerability in npm package ant-design-pro
CVE-2023-41887 Vulnerability in maven package org.openrefine:database