What is CVE-2018-20803?

CVE-2018-20803 is a vulnerability in MongoDB Server versions prior to 4.0.5, 3.6 versions prior to 3.6.10, and 3.4 versions prior to 3.4.19, that allows a user authorized to perform database queries to trigger denial of service by issuing specially crafted queries.

How does CVE-2018-20803 work?

CVE-2018-20803 works by causing an indefinite loop in the mathematics processing of MongoDB Server, while retaining locks, which leads to denial of service.

What is the severity of CVE-2018-20803?

CVE-2018-20803 has a severity rating of 6.5, which is considered medium.

What software versions are affected by CVE-2018-20803?

CVE-2018-20803 affects MongoDB Server versions prior to 4.0.5, 3.6 versions prior to 3.6.10, and 3.4 versions prior to 3.4.19.

How can I mitigate CVE-2018-20803?

To mitigate CVE-2018-20803, it is recommended to update MongoDB Server to version 4.0.5, 3.6.10, or 3.4.19 or later.

Vulnerability/
CVE-2018-20803

medium

6.5

CWE

835

23/11/2020

16/9/2024

CVE-2018-20803: Infinite loop in aggregation expression

First published: Mon Nov 23 2020(Updated: )

A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries, which loop indefinitely in mathematics processing while retaining locks. This issue affects MongoDB Server v4.0 versions prior to 4.0.5; MongoDB Server v3.6 versions prior to 3.6.10 and MongoDB Server v3.4 versions prior to 3.4.19.

Credit: cna@mongodb.com cna@mongodb.com

Affected Software	Affected Version	How to fix
MongoDB MongoDB	>=3.4.0<3.4.19
MongoDB MongoDB	>=3.6.0<3.6.10
MongoDB MongoDB	>=4.0.0<4.0.5

Remedy

https://jira.mongodb.org/browse/SERVER-38070

Never miss a vulnerability like this again

Reference Links

https://jira.mongodb.org/browse/SERVER-38070

Frequently Asked Questions

What is CVE-2018-20803?
CVE-2018-20803 is a vulnerability in MongoDB Server versions prior to 4.0.5, 3.6 versions prior to 3.6.10, and 3.4 versions prior to 3.4.19, that allows a user authorized to perform database queries to trigger denial of service by issuing specially crafted queries.
How does CVE-2018-20803 work?
CVE-2018-20803 works by causing an indefinite loop in the mathematics processing of MongoDB Server, while retaining locks, which leads to denial of service.
What is the severity of CVE-2018-20803?
CVE-2018-20803 has a severity rating of 6.5, which is considered medium.
What software versions are affected by CVE-2018-20803?
CVE-2018-20803 affects MongoDB Server versions prior to 4.0.5, 3.6 versions prior to 3.6.10, and 3.4 versions prior to 3.4.19.
How can I mitigate CVE-2018-20803?
To mitigate CVE-2018-20803, it is recommended to update MongoDB Server to version 4.0.5, 3.6.10, or 3.4.19 or later.

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collector/nvd-index
agent/software-canonical-lookup
agent/software-canonical-lookup-request
collector/nvd-api
source/NVD
vendor/mongodb
canonical/mongodb mongodb
version/mongodb mongodb/3.4.0
version/mongodb mongodb/3.6.0
version/mongodb mongodb/4.0.0

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