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Improper Certificate Validation in MongoDB

Moderate severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Feb 13, 2024

Package

maven org.mongodb:mongo-java-driver (Maven)

Affected versions

>= 3.11.0, <= 3.11.2
>= 3.12.0, <= 3.12.7

Patched versions

3.11.3
3.12.8
maven org.mongodb:mongodb-driver (Maven)
>= 3.11.0, <= 3.11.2
>= 3.12.0, <= 3.12.7
3.11.3
3.12.8
maven org.mongodb:mongodb-driver-legacy (Maven)
>= 4.0.0, <= 4.0.5
>= 4.1.0, <= 4.1.1
>= 3.11.0, <= 3.11.2
>= 3.12.0, <= 3.12.7
= 4.2.0
4.0.6
4.1.2
3.11.3
3.12.8
4.2.1
maven org.mongodb:mongodb-driver-sync (Maven)
>= 4.0.0, <= 4.0.5
>= 4.1.0, <= 4.1.1
= 4.2.0
>= 3.12.0, <= 3.12.7
>= 3.11.0, <= 3.11.2
4.0.6
4.1.2
4.2.1
3.12.8
3.11.3

Description

Specific versions of the Java driver that support client-side field level encryption (CSFLE) fail to perform correct host name verification on 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 Java driver and the KMS service rendering Field Level Encryption ineffective. This issue was discovered during internal testing and affects all versions of the Java driver that support CSFLE. The Java async, Scala, and reactive streams drivers are not impacted. This vulnerability does not impact driver traffic payloads with CSFLE-supported key services originating from applications residing inside the AWS, GCP, and Azure network fabrics due to compensating controls in these environments. This issue does not impact driver workloads that don’t use Field Level Encryption.

References

Published by the National Vulnerability Database Feb 25, 2021
Published to the GitHub Advisory Database May 24, 2022
Reviewed Jun 22, 2022
Last updated Feb 13, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Adjacent
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS score

0.046%
(19th percentile)

Weaknesses

CVE ID

CVE-2021-20328

GHSA ID

GHSA-rghw-6px2-fgwc

Source code

No known source code
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