CVE-2020-28500 : What You Need to Know

Lodash versions prior to 4.17.21 are vulnerable to Regular Expression Denial of Service (ReDoS) through specific functions.

Understanding CVE-2020-28500

This CVE involves a vulnerability in Lodash versions that could lead to Regular Expression Denial of Service (ReDoS) attacks.

What is CVE-2020-28500?

CVE-2020-28500 is a security vulnerability in Lodash versions prior to 4.17.21 that allows for Regular Expression Denial of Service (ReDoS) attacks via certain functions.

The Impact of CVE-2020-28500

The vulnerability poses a medium severity risk with a CVSS base score of 5.3. It can be exploited remotely with low attack complexity and impact availability.

Technical Details of CVE-2020-28500

This section covers the technical aspects of the CVE.

Vulnerability Description

The vulnerability in Lodash versions prior to 4.17.21 allows for ReDoS attacks through functions like toNumber, trim, and trimEnd.

Affected Systems and Versions

Product: Lodash
Vendor: n/a
Vulnerable Versions: versions prior to 4.17.21

Exploitation Mechanism

The vulnerability can be exploited remotely with low attack complexity, requiring no privileges and no user interaction.

Mitigation and Prevention

Protecting systems from CVE-2020-28500 is crucial to maintain security.

Immediate Steps to Take

Update Lodash to version 4.17.21 or newer to mitigate the vulnerability.
Monitor for any unusual activities that could indicate a ReDoS attack.

Long-Term Security Practices

Regularly update software libraries and dependencies to patch known vulnerabilities.
Implement input validation and sanitization to prevent ReDoS attacks.

Patching and Updates

Stay informed about security alerts and patches related to Lodash and other dependencies.