CVE-2019-17592 : Vulnerability Insights and Analysis

Node.js versions prior to 4.4.6 are at risk of experiencing Regular Expression Denial of Service due to a vulnerability found in the csv-parse module.

Understanding CVE-2019-17592

What is CVE-2019-17592?

The csv-parse module before version 4.4.6 for Node.js is vulnerable to Regular Expression Denial of Service. The __isInt() function contains a malformed regular expression that processes large crafted input very slowly. This vulnerability is triggered when using the cast option.

The Impact of CVE-2019-17592

This vulnerability can lead to a Regular Expression Denial of Service (ReDoS) attack, causing significant slowdowns in processing manipulated input, particularly when handling substantial data.

Technical Details of CVE-2019-17592

Vulnerability Description

The flawed regular expression within the __isInt() function of the csv-parse module in Node.js versions prior to 4.4.6 can be exploited to trigger a ReDoS attack.

Affected Systems and Versions

Node.js versions prior to 4.4.6

Exploitation Mechanism

The vulnerability is activated when utilizing the cast option in the csv-parse module, allowing attackers to craft input that significantly slows down processing.

Mitigation and Prevention

Immediate Steps to Take

Update Node.js to version 4.4.6 or later to mitigate the vulnerability.
Avoid using the cast option in the csv-parse module until the system is patched.

Long-Term Security Practices

Regularly monitor for security advisories related to Node.js and its modules.
Implement input validation mechanisms to prevent ReDoS attacks.

Patching and Updates

Apply patches and updates promptly to ensure the security of Node.js and its associated modules.