CVE-2022-25758 : Security Advisory and Response

Regular Expression Denial of Service (ReDoS) vulnerability has been discovered in all versions of the package scss-tokenizer. This CVE poses a medium severity threat due to insecure regex usage in the loadAnnotation() function.

Understanding CVE-2022-25758

This section provides insights into the impact and technical aspects of the Regular Expression Denial of Service (ReDoS) vulnerability in scss-tokenizer.

What is CVE-2022-25758?

The vulnerability in scss-tokenizer allows attackers to launch Regular Expression Denial of Service (ReDoS) attacks through the loadAnnotation() function, making it prone to regex-based exploitation.

The Impact of CVE-2022-25758

With a CVSS base score of 5.3, this medium severity vulnerability affects the availability of the system without impacting confidentiality, integrity, or requiring user interaction. The attack complexity is low and can be exploited over a network.

Technical Details of CVE-2022-25758

Explore the technical specifics and implications of the Regular Expression Denial of Service (ReDoS) vulnerability in scss-tokenizer.

Vulnerability Description

The vulnerability arises from the insecure regex used in the loadAnnotation() function, enabling ReDoS attacks that could potentially disrupt system availability.

Affected Systems and Versions

All versions of scss-tokenizer are impacted by this vulnerability, making them susceptible to ReDoS attacks due to the insecure regex implementation.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious inputs that trigger excessive backtracking in the regex engine, causing denial of service.

Mitigation and Prevention

Learn how to mitigate the risks posed by CVE-2022-25758 and secure your systems against ReDoS attacks.

Immediate Steps to Take

Developers should update to a patched version of scss-tokenizer that addresses the insecure regex issue. Regularly monitor for security advisories related to the package.

Long-Term Security Practices

Implement secure regex patterns, input validation mechanisms, and avoid using vulnerable components susceptible to ReDoS attacks.

Patching and Updates

Stay informed about security updates for scss-tokenizer and promptly apply patches to remediate the Regular Expression Denial of Service (ReDoS) vulnerability.