Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Convict | < 6.2.3 |
Related Weaknesses (CWE)
References
- https://gist.github.com/dellalibera/cebce20e51410acebff1f46afdc89808ExploitThird Party Advisory
- https://github.com/mozilla/node-convict/blob/3b86be087d8f14681a9c889d45da7fe3ad9Broken LinkPatchThird Party Advisory
- https://github.com/mozilla/node-convict/blob/master/CHANGELOG.md%23623---2022-05Broken LinkRelease NotesTool Signature
- https://github.com/mozilla/node-convict/commit/1ea0ab19c5208f66509e1c43b0d0f21c1PatchTool Signature
- https://snyk.io/vuln/SNYK-JS-CONVICT-2774757ExploitThird Party Advisory
- https://gist.github.com/dellalibera/cebce20e51410acebff1f46afdc89808ExploitThird Party Advisory
- https://github.com/mozilla/node-convict/blob/3b86be087d8f14681a9c889d45da7fe3ad9Broken LinkPatchThird Party Advisory
- https://github.com/mozilla/node-convict/blob/master/CHANGELOG.md%23623---2022-05Broken LinkRelease NotesTool Signature
- https://github.com/mozilla/node-convict/commit/1ea0ab19c5208f66509e1c43b0d0f21c1PatchTool Signature
- https://snyk.io/vuln/SNYK-JS-CONVICT-2774757ExploitThird Party Advisory
FAQ
What is CVE-2022-21190?
CVE-2022-21190 is a vulnerability with a CVSS score of 7.5 (HIGH). 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/3b8...
How severe is CVE-2022-21190?
CVE-2022-21190 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-21190?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Convict.