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go.mongodb.org/mongo-driver improperly validates cstrings when marshalling Go objects into BSON

Moderate severity GitHub Reviewed Published Jun 15, 2021 to the GitHub Advisory Database • Updated Sep 17, 2024

Package

gomod go.mongodb.org/mongo-driver (Go)

Affected versions

< 1.5.1

Patched versions

1.5.1

Description

Specific cstrings input may not be properly validated in the MongoDB Go Driver when marshalling Go objects into BSON. A malicious user could use a Go object with specific string to potentially inject additional fields into marshalled documents. This issue affects all MongoDB GO Drivers up to (and including) 1.5.0.

References

Published by the National Vulnerability Database Jun 10, 2021
Reviewed Jun 14, 2021
Published to the GitHub Advisory Database Jun 15, 2021
Last updated Sep 17, 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
Network
Attack complexity
High
Privileges required
Low
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:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS score

0.050%
(21st percentile)

Weaknesses

CVE ID

CVE-2021-20329

GHSA ID

GHSA-f6mq-5m25-4r72

Source code

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