CVE-2020-8277: 
npm vulnerability analysis and mitigation

CVE-2020-8277 is a Denial of Service vulnerability discovered in Node.js that affects versions < 15.2.1, < 14.15.1, and < 12.19.1. The vulnerability allows an attacker to trigger a DNS request for a host of their choice, potentially causing a Denial of Service by getting the application to resolve a DNS record with a larger number of responses. The vulnerability was disclosed in November 2020 and has been fixed in versions 15.2.1, 14.15.1, and 12.19.1 (Node.js Blog).

The vulnerability exists in Node.js applications that allow triggering DNS requests. An attacker can cause a Denial of Service condition by manipulating the application to resolve a DNS record containing a large number of responses. The vulnerability affects multiple versions of Node.js including versions 12.16.3 and higher on the 12.x release line, versions 14.13.0 and higher on the 14.x release line, and all versions of the 15.x release line (Node.js Blog).

The successful exploitation of this vulnerability can result in a Denial of Service condition, potentially making the affected Node.js application unavailable to legitimate users (NVD).

The vulnerability has been fixed in Node.js versions 15.2.1, 14.15.1, and 12.19.1. Users are strongly recommended to upgrade to these patched versions to mitigate the vulnerability (Node.js Blog).