CVE-2022-25858 : Security Advisory and Response

Regular Expression Denial of Service (ReDoS) vulnerability found in the package terser affects versions before 4.8.1, from 5.0.0 and before 5.14.2 due to insecure regular expressions usage.

Understanding CVE-2022-25858

This CVE refers to a vulnerability in the terser package that can lead to Regular Expression Denial of Service (ReDoS) attacks.

What is CVE-2022-25858?

The package terser versions prior to 4.8.1, from 5.0.0, and before 5.14.2 are susceptible to Regular Expression Denial of Service (ReDoS) attacks due to insecure regular expression handling.

The Impact of CVE-2022-25858

The vulnerability allows attackers to cause denial of service (DoS) by exploiting the inefficient regular expressions, potentially leading to service downtime.

Technical Details of CVE-2022-25858

This section details the technical aspects of the CVE.

Vulnerability Description

The CVE involves insecure usage of regular expressions within the terser package, leading to a ReDoS vulnerability.

Affected Systems and Versions

Versions prior to 4.8.1, from 5.0.0, and before 5.14.2 of the terser package are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit the vulnerability by crafting malicious input that triggers inefficient regular expressions, causing the application to hang or crash.

Mitigation and Prevention

To address CVE-2022-25858, follow the mitigation strategies outlined below.

Immediate Steps to Take

Developers should update the terser package to a non-vulnerable version, implementing secure regex patterns to prevent ReDoS attacks.

Long-Term Security Practices

Adopt secure coding practices, regularly update dependencies, and conduct code reviews to identify and remediate vulnerabilities like ReDoS.

Patching and Updates

Stay informed about security updates for the terser package and promptly apply patches to eliminate the ReDoS risk.