6.8

CVE-2021-20328: mongodb inc. mongo-java-driver Improper Certificate Validation

CVSS: 6.8v3.1MediumModified
AliasesUBUNTU-CVE-2021-20328GHSA-rghw-6px2-fgwc
Published 25-02-2021Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2021-20328 is a medium (CVSS 6.8) Improper Certificate Validation vulnerability in mongodb inc. mongo-java-driver. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 36.4% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.8/10
010
Medium · v3.1 (NVD)
EPSS score
0.44%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 25-02-2021
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

0.00 pp

From 0.43% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.44%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Mongodb inc.4 products
Org.mongodb4 products
  • mongo-java-driver≥ 3.11.0, < 3.11.3 | ≥ 3.12.0, < 3.12.8
  • mongodb-driver≥ 3.11.0, < 3.11.3 | ≥ 3.12.0, < 3.12.8
  • mongodb-driver-legacy≥ 4.0.0, < 4.0.6 | ≥ 4.1.0, < 4.1.2 | ≥ 3.11.0, < 3.11.3 | ≥ 3.12.0, < 3.12.8 | ≥ 4.2.0, < 4.2.1
  • mongodb-driver-sync≥ 4.0.0, < 4.0.6 | ≥ 4.1.0, < 4.1.2 | ≥ 4.2.0, < 4.2.1 | ≥ 3.12.0, < 3.12.8 | ≥ 3.11.0, < 3.11.3
Mongodb1 product
  • java_driver≥ 3.11.0, < 3.11.3 | ≥ 3.12.0, < 3.12.8 | ≥ 4.0.0, < 4.0.6 | ≥ 4.1.0, < 4.1.2 | ≥ 4.2.0, < 4.2.1
Quarkus1 product
Ubuntu1 product
  • mongo-java-driverAll versions (No fix recorded)

5 vendors · 11 products

References

4 links