CVE-2018-20802: Post-auth queries on compound index may crash mongod

Published Nov 23, 2020
·
Updated

A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner. This issue affects MongoDB Server v3.6 versions prior to 3.6.9 and MongoDB Server v4.0 versions prior to 4.0.3.

Other sources

A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner. This issue affects: MongoDB Inc. MongoDB Server v3.6 versions prior to 3.6.9, v4.0 versions prior to 4.0.3.

Affected Software

2 affected components
MongoDB MongoDB>=3.6.0<3.6.9
MongoDB MongoDB>=4.0.0<4.0.3

Event History

Nov 23, 2020
CVE Published
via MITRE·03:15 PM
Data Sourced
via MITRE·03:15 PM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is CVE-2018-20802?

CVE-2018-20802 is a vulnerability that allows a user authorized to perform database queries to trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner.

2

Which versions of MongoDB Server are affected by CVE-2018-20802?

CVE-2018-20802 affects MongoDB Server v3.6 versions prior to 3.6.9 and v4.0 versions prior to 4.0.3.

3

How can CVE-2018-20802 be exploited?

CVE-2018-20802 can be exploited by a user authorized to perform database queries by issuing specially crafted queries with compound indexes affecting QueryPlanner.

4

What is the severity of CVE-2018-20802?

CVE-2018-20802 has a severity level of medium.

5

Is there a fix available for CVE-2018-20802?

Yes, a fix for CVE-2018-20802 is available in MongoDB Server v3.6.9 and v4.0.3.

Company

Resources

Contact

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