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CVE-2021-32037— User may trigger invariant when allowed to send commands directly to shards

Quick assessment

Affected
MongoDB Inc. MongoDB Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mongodb Server是美国Mongodb公司的一套开源的NoSQL数据库。该数据库提供面向集合的存储、动态查询、数据复制及自动故障转移等功能。 Mongodb 中存在输入验证错误漏洞，该漏洞源于产品未对特殊请求做有效验证。攻击者可通过发送特殊的聚合请求到shard并触发一个不变量导致拒绝服务或服务器退出。以下产品及版本受到影响：MongoDB v5.0.0 至 v5.0.2 版本。

CVSS 6.5 · Medium EPSS 1.18% · P65

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-32037

Vulnerability Information
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Vulnerability Title
User may trigger invariant when allowed to send commands directly to shards
Source: CVE Program / CVE List V5
Vulnerability Description
An authorized user may trigger an invariant which may result in denial of service or server exit if a relevant aggregation request is sent to a shard. Usually, the requests are sent via mongos and special privileges are required in order to know the address of the shards and to log in to the shards of an auth enabled environment. This issue affects MongoDB Server v5.0 versions prior to and including 5.0.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5
Vulnerability Title
Mongodb Server 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mongodb Server是美国Mongodb公司的一套开源的NoSQL数据库。该数据库提供面向集合的存储、动态查询、数据复制及自动故障转移等功能。 Mongodb 中存在输入验证错误漏洞，该漏洞源于产品未对特殊请求做有效验证。攻击者可通过发送特殊的聚合请求到shard并触发一个不变量导致拒绝服务或服务器退出。以下产品及版本受到影响：MongoDB v5.0.0 至 v5.0.2 版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MongoDB Inc. MongoDB Server 5.0 ~ 5.0.2 -

II. Public POCs for CVE-2021-32037

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III. Intelligence Information for CVE-2021-32037

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Other References for CVE-2021-32037 (1)

IV. Related Vulnerabilities

Same product: MongoDB Server
Same vendor: MongoDB Inc.
Same weakness: CWE-617

V. Comments for CVE-2021-32037

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