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Rewterz Threat Advisory – CVE-2021-23382 – Node.js postcss Module Denial of Service

Severity

Medium

Analysis Summary

CVE-2021-23382

Node.js postcss module is vulnerable to a denial of service, caused by a regular expression denial of Service (ReDoS) flaw in the getAnnotationURL() and loadAnnotation() functions in lib/previous-map.js. By sending specially-crafted regex input, a remote attacker could exploit this vulnerability to cause a denial of service condition.

Impact

Denial of Service

Affected Vendors

Node.js

Affected Products

Node.js postcss 8.2.12

Remediation

Upgrade to the latest version of postcss (8.2.13 or later), available from the postcss GIT Repository.

postcss GIT Repository