Bug 2026509 (CVE-2021-32037)

Summary:	CVE-2021-32037 mongodb: Using $sample can trigger invariant when connecting directly to shards
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	athomas, bkearney, dbecker, jjoyce, jschluet, lhh, lpeer, mburns, sclewis, slinaber
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	mongodb 5.0.3	Doc Type:	If docs needed, set a value
Doc Text:	An assertion flaw was found in the mongodb server where an aggregation request could trigger an invariant. An authorized user could exploit this flaw by sending a relevant aggregation request to a shard, which could result in a denial of service or server exit. Requests are usually 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.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2028482
Bug Blocks:	2026510

Description Pedro Sampaio 2021-11-24 22:03:33 UTC

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.

References:

https://jira.mongodb.org/browse/SERVER-59071

Comment 1 Summer Long 2021-12-02 00:24:12 UTC

Upstream commits:
5.1.0-rc0: https://github.com/mongodb/mongo/commit/f3604b901d688c194de5e430c7fbab060c9dc8e0
5.0.3: https://github.com/mongodb/mongo/commit/a5e2f9b0a236462a6d1ca129583c617f111367b4