CVE-2020-8136 Explained : Impact and Mitigation

Fastify-multipart < 1.0.5 is vulnerable to a prototype pollution issue that can lead to denial of service attacks.

Understanding CVE-2020-8136

This CVE involves a vulnerability in fastify-multipart that allows attackers to crash applications parsing multipart requests.

What is CVE-2020-8136?

Fastify-multipart versions prior to 1.0.5 are susceptible to a prototype pollution flaw, enabling attackers to disrupt fastify applications by sending specially crafted requests.

The Impact of CVE-2020-8136

The vulnerability can result in denial of service attacks, potentially causing system crashes and service unavailability.

Technical Details of CVE-2020-8136

Fastify-multipart < 1.0.5 is affected by a prototype pollution vulnerability.

Vulnerability Description

A flaw in fastify-multipart < 1.0.5 allows attackers to crash applications parsing multipart requests through specially crafted input.

Affected Systems and Versions

Product: fastify-multipart
Vendor: n/a
Versions affected: < 1.0.5

Exploitation Mechanism

Attackers exploit the vulnerability by sending maliciously crafted requests to the fastify application, triggering denial of service.

Mitigation and Prevention

To address CVE-2020-8136, follow these steps:

Immediate Steps to Take

Upgrade fastify-multipart to version 1.0.5 or later to mitigate the vulnerability.
Monitor and restrict incoming requests to prevent malicious inputs.

Long-Term Security Practices

Regularly update software components to patch known vulnerabilities.
Implement input validation and sanitization to filter out potentially harmful requests.

Patching and Updates

Apply patches and updates provided by the fastify-multipart project to fix the vulnerability.