PT-2021-3187 · Postcss · Postcss

Yeting Li · Published 2021-04-12 · Updated 2021-06-11 · CVE-2021-23368

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions postcss versions 7.0.0 through 8.2.10

Description The issue is related to a Regular Expression Denial of Service (ReDoS) during source map parsing, which can lead to uncontrolled resource consumption. This could allow a remote attacker to cause a denial of service.

Recommendations For postcss versions 7.0.0 through 8.2.10, update to version 8.2.10 or later to resolve the issue. As a temporary workaround, consider restricting the use of source map parsing until a patch is available.

Exploit

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

BDU:2021-02876

CVE-2021-23368

GHSA-HWJ9-H5MP-3PM3

SNYK-JAVA-ORGWEBJARSNPM-1244795

SNYK-JS-POSTCSS-1090595

Affected Products

Postcss

References · 27

• 🔥 https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1244795 · Exploit
• 🔥 https://snyk.io/vuln/SNYK-JS-POSTCSS-1090595 · Exploit
• https://github.com/postcss/postcss/commit/b6f3e4d5a8d7504d553267f80384373af3a3dec5 · Patch
• https://github.com/postcss/postcss/commit/8682b1e4e328432ba692bed52326e84439cec9e4 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-23368 · Security Note
• https://bdu.fstec.ru/vul/2021-02876 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-23368 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-23368 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-hwj9-h5mp-3pm3 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-23368 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-23368 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-23368 · Security Note
• https://ubuntu.com/security/CVE-2021-23368 · Vendor Advisory
• https://github.com/postcss/postcss/commit/54cbf3c4847eb0fb1501b9d2337465439e849734 · Note
• https://lists.apache.org/thread.html/rad5af2044afb51668b1008b389ac815a28ecea9eb75ae2cab5a00ebb@%3Ccommits.myfaces.apache.org%3E · Note