CVE-2020-7926 : A user authorized to perform database queries may cause denial of service by iss

A user authorized to perform database queries may cause denial of service by issuing a specially crafted query which violates an invariant in the server selection subsystem. This issue affects MongoDB Server v4.4 versions prior to 4.4.1. Versions before 4.4 are not affected.

Published 2020-11-23 15:15:12

Updated 2024-09-16 21:15:37

Source MongoDB, Inc.

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2020-7926

Mongodb » Mongodb
Versions from including (>=) 4.4.0 and before (<) 4.4.1
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2020-7926

Top countries where our scanners detected CVE-2020-7926

Top open port discovered on systems with this issue 27017

IPs affected by CVE-2020-7926 639

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2020-7926!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-7926

EPSS FAQ

0.44%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 60 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-7926

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.0	MEDIUM	AV:N/AC:L/Au:S/C:N/I:N/A:P	8.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
6.5	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	2.8	3.6	MongoDB, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
6.5	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	2.8	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2020-7926

CWE-755 Improper Handling of Exceptional Conditions

The product does not handle or incorrectly handles an exceptional condition.
Assigned by:
- cna@mongodb.com (Secondary)
- nvd@nist.gov (Primary)

References for CVE-2020-7926

https://jira.mongodb.org/browse/SERVER-50170

[SERVER-50170] Fix server selection failure on mongos - MongoDB
Issue Tracking;Vendor Advisory