CVEs-PoC/2021/CVE-2021-23382.md

CVE-2021-23382

Description

The package postcss before 8.2.13 are vulnerable to Regular Expression Denial of Service (ReDoS) via getAnnotationURL() and loadAnnotation() in lib/previous-map.js. The vulnerable regexes are caused mainly by the sub-pattern /*\s* sourceMappingURL=(.*).

POC

Reference

• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1255641
• https://snyk.io/vuln/SNYK-JS-POSTCSS-1255640

Github

• https://github.com/engn33r/awesome-redos-security
• https://github.com/seal-community/patches