CVE-2021-20327

MongoDB Node.js client side field level encryption library may not be validating KMS certificate

Description

A specific version of the Node.js mongodb-client-encryption module does not perform correct validation of the KMS server’s certificate. This vulnerability in combination with a privileged network position active MITM attack could result in interception of traffic between the Node.js driver and the KMS service rendering client-side field level encryption (CSFLE) ineffective. This issue was discovered during internal testing and affects mongodb-client-encryption module version 1.2.0, which was available from 2021-Jan-29 and deprecated in the NPM Registry on 2021-Feb-04. This vulnerability does not impact driver traffic payloads with CSFLE-supported key services from applications residing inside the AWS, GCP, and Azure nework fabrics due to compensating controls in these environments. This issue does not impact driver workloads that don’t use Field Level Encryption. This issue affect MongoDB Node.js Driver mongodb-client-encryption module version 1.2.0

Category

6.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.12%
Vendor Advisory mongodb.org
Affected: MongoDB Inc. MongoDB Node.js Driver mongodb-client-encryption module
Published at:
Updated at:

References

Link Tags
https://jira.mongodb.org/browse/NODE-3125 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-20327?
CVE-2021-20327 has been scored as a medium severity vulnerability.
How to fix CVE-2021-20327?
To fix CVE-2021-20327, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-20327 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20327 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20327?
CVE-2021-20327 affects MongoDB Inc. MongoDB Node.js Driver mongodb-client-encryption module.
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