CVE-2022-21190

 

Published at: - 13-05-2022 10:15

Last modified: - 24-05-2022 04:11

Total changes: - 2

Description

This affects the package convict before 6.2.3. This is a bypass of [CVE-2022-22143](https://security.snyk.io/vuln/SNYK-JS-CONVICT-2340604). The [fix](https://github.com/mozilla/node-convict/commit/3b86be087d8f14681a9c889d45da7fe3ad9cd880) introduced, relies on the startsWith method and does not prevent the vulnerability: before splitting the path, it checks if it starts with __proto__ or this.constructor.prototype. To bypass this check it's possible to prepend the dangerous paths with any string value followed by a dot, like for example foo.__proto__ or foo.this.constructor.prototype.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• N/A-Broken Link, Release Notes, Tool Signature
• N/A-Broken Link, Patch, Third Party Advisory
• N/A-Exploit, Third Party Advisory
• N/A-Exploit, Third Party Advisory
• N/A-Patch, Tool Signature

 

Keywords

NVD

 

CVE-2022-21190

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures