CVE-2020-28496 Explained : Impact and Mitigation

This CVE involves a Regular Expression Denial of Service (ReDoS) vulnerability in the 'three' package before version 0.125.0, affecting systems when handling rgb or hsl colors.

Understanding CVE-2020-28496

This vulnerability was made public on February 18, 2021, with a high severity base score of 7.5.

What is CVE-2020-28496?

The CVE-2020-28496 is a ReDoS vulnerability in the 'three' package versions prior to 0.125.0, triggered during the processing of rgb or hsl colors.

The Impact of CVE-2020-28496

The vulnerability has a high impact on availability, with a CVSS base score of 7.5, indicating a significant threat to affected systems.

Technical Details of CVE-2020-28496

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability allows attackers to cause a denial of service by exploiting the way 'three' handles rgb or hsl colors, leading to potential system unavailability.

Affected Systems and Versions

Product: 'three'
Vendor: Not applicable
Versions Affected: < 0.125.0

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating rgb or hsl color processing in the 'three' package, potentially causing system downtime.

Mitigation and Prevention

Protecting systems from CVE-2020-28496 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the 'three' package to version 0.125.0 or higher to mitigate the vulnerability.
Monitor system logs for any unusual activities related to color processing.

Long-Term Security Practices

Regularly update packages and dependencies to prevent known vulnerabilities.
Implement input validation mechanisms to detect and block malicious inputs.

Patching and Updates

Stay informed about security updates for the 'three' package and apply patches promptly to address any newly discovered vulnerabilities.