CVE-2021-23392 : Vulnerability Insights and Analysis

This article provides details about CVE-2021-23392, a vulnerability in the 'locutus' package that affects versions prior to 2.0.15.

Understanding CVE-2021-23392

This section delves into the nature of the vulnerability and its impact.

What is CVE-2021-23392?

The package 'locutus' versions before 2.0.15 are susceptible to Regular Expression Denial of Service (ReDoS) through the 'gopher_parsedir' function.

The Impact of CVE-2021-23392

The vulnerability poses a medium-risk threat with a CVSS base score of 5.3. It can lead to availability issues but does not impact confidentiality or integrity.

Technical Details of CVE-2021-23392

This section outlines the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

CVE-2021-23392 involves a ReDoS vulnerability in 'locutus' before version 2.0.15, specifically via the 'gopher_parsedir' function.

Affected Systems and Versions

The vulnerability affects all versions of the 'locutus' package that are older than 2.0.15.

Exploitation Mechanism

Attackers can leverage this vulnerability to launch ReDoS attacks through the 'gopher_parsedir' function.

Mitigation and Prevention

This section provides guidance on mitigating the risk and securing systems against CVE-2021-23392.

Immediate Steps to Take

Users should update the 'locutus' package to version 2.0.15 or newer to eliminate the vulnerability.

Long-Term Security Practices

Regularly monitor for security updates and apply patches promptly to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security advisories for 'locutus' and other dependencies, ensuring timely application of patches.