CVE-2018-7560 : What You Need to Know

A Regular Expression Denial of Service (ReDoS) vulnerability in the Anton Myshenin aws-lambda-multipart-parser NPM package version 0.1.2 or earlier allows exploitation through a malicious multipart/form-data boundary string.

Understanding CVE-2018-7560

This CVE involves a ReDoS vulnerability in a specific version of the aws-lambda-multipart-parser NPM package.

What is CVE-2018-7560?

The vulnerability in the index.js file of the NPM package allows for ReDoS attacks using crafted multipart/form-data boundary strings.

The Impact of CVE-2018-7560

The vulnerability can be exploited by attackers to cause denial of service by overwhelming the system with specially crafted requests.

Technical Details of CVE-2018-7560

This section provides more technical insights into the vulnerability.

Vulnerability Description

The index.js file in the aws-lambda-multipart-parser NPM package before version 0.1.2 is susceptible to ReDoS attacks due to a flaw in processing multipart/form-data.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: 0.1.2 and earlier

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted multipart/form-data boundary strings to trigger the ReDoS issue.

Mitigation and Prevention

Protecting systems from CVE-2018-7560 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the aws-lambda-multipart-parser package to version 0.1.2 or later.
Monitor and restrict incoming multipart/form-data requests.

Long-Term Security Practices

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

Patching and Updates

Ensure all software components, including the aws-lambda-multipart-parser package, are regularly updated to the latest secure versions.