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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published: 2022-05-13T20:00:38.749156Z

Updated: 2024-09-17T03:32:50.471Z

Reserved: 2022-02-24T00:00:00

Link: CVE-2022-21190

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2022-05-13T20:15:08.013

Modified: 2022-05-24T14:11:33.373

Link: CVE-2022-21190

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-05-13T00:00:00Z

Links: CVE-2022-21190 - Bugzilla