CVE-2020-7929 : A user authorized to perform database queries may trigger denial of service by i

A user authorized to perform database queries may trigger denial of service by issuing specially crafted query contain a type of regex. This issue affects MongoDB Server v3.6 versions prior to 3.6.21 and MongoDB Server v4.0 versions prior to 4.0.20.

Published 2021-03-01 16:15:13

Updated 2024-09-16 20:15:36

Source MongoDB, Inc.

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2020-7929

Mongodb » Mongodb
Versions from including (>=) 3.6.0 and before (<) 3.6.21
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
Matching versions
Mongodb » Mongodb
Versions from including (>=) 4.0.0 and before (<) 4.0.20
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2020-7929

Top countries where our scanners detected CVE-2020-7929

Top open port discovered on systems with this issue 27017

IPs affected by CVE-2020-7929 5,646

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2020-7929!

^*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-2020-7929

EPSS FAQ

0.07%

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

~ 28 %

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

CVSS scores for CVE-2020-7929

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-2020-7929

CWE-185 Incorrect Regular Expression

The product specifies a regular expression in a way that causes data to be improperly matched or compared.

Assigned by: cna@mongodb.com (Secondary)

References for CVE-2020-7929

https://jira.mongodb.org/browse/SERVER-51083

[SERVER-51083] Problem with regex index bounds - MongoDB
Issue Tracking;Patch;Vendor Advisory