Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXh4dnctNDVycC0zbWoy

Deserialization Code Execution in js-yaml

Versions 2.0.4 and earlier of js-yaml are affected by a code execution vulnerability in the YAML deserializer.

Proof of Concept

const yaml = require('js-yaml');

const x = `test: !!js/function >
function f() { 
console.log(1); 
}();`

yaml.load(x);

Recommendation

Update js-yaml to version 2.0.5 or later, and ensure that all instances where the .load() method is called are updated to use .safeLoad() instead.

Permalink: https://github.com/advisories/GHSA-xxvw-45rp-3mj2
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXh4dnctNDVycC0zbWoy
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: about 7 years ago
Updated: almost 2 years ago

EPSS Percentage: 0.96271
EPSS Percentile: 0.99678

Identifiers: GHSA-xxvw-45rp-3mj2, CVE-2013-4660
References:

• https://nvd.nist.gov/vuln/detail/CVE-2013-4660
• https://github.com/advisories/GHSA-xxvw-45rp-3mj2
• https://nealpoole.com/blog/2013/06/code-execution-via-yaml-in-js-yaml-nodejs-module/
• https://www.npmjs.com/advisories/16

Blast Radius: 0.0

Affected Packages