Description
is.js is a general-purpose check library. Versions 0.9.0 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). is.js uses a regex copy-pasted from a gist to validate URLs. Trying to validate a malicious string can cause the regex to loop “forever." This vulnerability was found using a CodeQL query which identifies inefficient regular expressions. is.js has no patch for this issue.
Remediation
References
https://github.com/arasatasaygin/is.js/issues/320
https://securitylab.github.com/advisories/GHSL-2020-295-redos-is.js
Related Vulnerabilities
CVE-2020-2321 Vulnerability in maven package org.jenkins-ci.plugins:shelve-project-plugin
CVE-2019-9142 Vulnerability in maven package org.b3log:symphony
CVE-2019-5432 Vulnerability in npm package mqtt-packet
CVE-2020-36604 Vulnerability in npm package @hapi/hoek
CVE-2021-20220 Vulnerability in maven package io.undertow:undertow-core