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Improper Input Validation in Automattic Mongoose

Critical severity GitHub Reviewed Published Oct 22, 2019 to the GitHub Advisory Database • Updated Nov 29, 2023

Package

npm mongoose (npm)

Affected versions

>= 5.0.0, < 5.7.5
< 4.13.21

Patched versions

5.7.5
4.13.21

Description

Automattic Mongoose through 5.7.4 allows attackers to bypass access control (in some applications) because any query object with a _bsontype attribute is ignored. For example, adding "_bsontype":"a" can sometimes interfere with a query filter. NOTE: this CVE is about Mongoose's failure to work around this _bsontype special case that exists in older versions of the bson parser (aka the mongodb/js-bson project).

References

Published by the National Vulnerability Database Oct 10, 2019
Reviewed Oct 14, 2019
Published to the GitHub Advisory Database Oct 22, 2019
Last updated Nov 29, 2023

Severity

Critical

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
Low
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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS score

0.194%
(58th percentile)

Weaknesses

CVE ID

CVE-2019-17426

GHSA ID

GHSA-8687-vv9j-hgph

Source code

Credits

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