IM
IronMonkey Threat Research

CVE-2021-20330 MEDIUM

Published: 2021-12-15 | Last Modified: 2024-11-21 | Status: Modified

Description

An attacker with basic CRUD permissions on a replicated collection can run the applyOps command with specially malformed oplog entries, resulting in a potential denial of service on secondaries. This issue affects MongoDB Server v4.0 versions prior to 4.0.27; MongoDB Server v4.2 versions prior to 4.2.16; MongoDB Server v4.4 versions prior to 4.4.9.

Additional Descriptions (1)

Un atacante con permisos CRUD básicos en una colección replicada puede ejecutar el comando applyOps con entradas oplog especialmente malformadas, resultando en una potencial denegación de servicio en los secundarios. Este problema afecta a las versiones de MongoDB Server v4.0 anteriores a 4.0.25; a las versiones de MongoDB Server v4.2 anteriores a 4.2.14; a las versiones de MongoDB Server v4.4 anteriores a 4.4.6

CVSS Metrics

Base Score: 6.5 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 2.8

Impact Score: 3.6

Base Score: 4.0 (MEDIUM)

AV:N/AC:L/Au:S/C:N/I:N/A:P

Access VectorNETWORK
Access ComplexityLOW
AuthenticationSINGLE
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactPARTIAL

Source: [email protected]

Type: Primary

Exploitability Score: 8.0

Impact Score: 2.9

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-20
[email protected] Primary
en CWE-20

Affected Products

Vendor Product Version Update Type
mongodb mongodb * <built-in method update of dict object at 0x717bf8235a00> Application
mongodb mongodb * <built-in method update of dict object at 0x717bda9d9640> Application
mongodb mongodb * <built-in method update of dict object at 0x717bdabdeb40> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*

References

Notification
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