Bug 2063893 (CVE-2021-41233)

Summary:	CVE-2021-41233 nextcloud: folder names of "File Drop" share accessible
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ce, james.hogarth
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nextcloud 20.0.14, nextcloud 21.0.6, nextcloud 22.2.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-03-14 22:31:21 UTC	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:	2063894
Bug Blocks:

Description Marian Rehak 2022-03-14 15:16:59 UTC

Due to an issue with the Nextcloud Text application, which is by default shipped with Nextcloud Server, an attacker is able to access the folder names of "File Drop". For successful exploitation an attacker requires knowledge of the sharing link. Users unable to upgrade should disable the Nextcloud Text application in the application settings.

Reference:

https://github.com/nextcloud/text/pull/1884
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-26c8-35cm-xq9m

Comment 1 Marian Rehak 2022-03-14 15:17:14 UTC

Created nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 2063894]

Comment 2 Product Security DevOps Team 2022-03-14 22:31:19 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.