CVE-2021-23368 : Security Advisory and Response

A detailed overview of CVE-2021-23368, a vulnerability affecting the 'postcss' package versions 7.0.0 to 8.2.10, exposing systems to Regular Expression Denial of Service (ReDoS) during source map parsing.

Understanding CVE-2021-23368

This section will cover essential information about CVE-2021-23368, including its impact, technical details, and mitigation strategies.

What is CVE-2021-23368?

The package 'postcss' versions 7.0.0 to 8.2.10 are susceptible to Regular Expression Denial of Service (ReDoS) during source map parsing.

The Impact of CVE-2021-23368

With a CVSS base score of 5.3, this vulnerability has a medium severity rating. Attackers can exploit this issue over a network without requiring any privileges, leading to a potential denial of service.

Technical Details of CVE-2021-23368

Explore the technical specifics of CVE-2021-23368, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in 'postcss' allows for Regular Expression Denial of Service (ReDoS) during source map parsing, impacting systems using affected versions.

Affected Systems and Versions

Versions 7.0.0 to 8.2.10 of the 'postcss' package are affected by this vulnerability, leaving systems utilizing these versions at risk.

Exploitation Mechanism

Attackers can exploit this vulnerability over a network with low complexity, potentially causing a denial of service by triggering ReDoS during source map parsing.

Mitigation and Prevention

Discover the steps to mitigate the risks posed by CVE-2021-23368, ensuring the security of systems and applications.

Immediate Steps to Take

It is recommended to update the 'postcss' package to a non-vulnerable version, apply patches, and monitor for any suspicious activities on the network.

Long-Term Security Practices

Maintain up-to-date software versions, conduct regular security assessments, and educate users on safe coding practices to mitigate future vulnerabilities.

Patching and Updates

Stay informed about security updates for 'postcss' and promptly apply patches to prevent exploitation of known vulnerabilities.