Bug 2004932 (CVE-2021-32802)

Summary:	CVE-2021-32802 nextcloud: supplying third party library with untrusted user input may lead to remote code execution
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 20.0.12, nextcloud 21.0.4, nextcloud 22.1.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-09-16 18:21:27 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:	2004933
Bug Blocks:

Description Marian Rehak 2021-09-16 13:15:40 UTC

Nextcloud supports rendering image previews for user provided file content. For some image types, the Nextcloud server was invoking a third-party library that wasn't suited for untrusted user-supplied content, this might lead to Server-Side-Request-Forgery of Remote Code Execution.

Upstream Advisory:

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m682-v4g9-wrq7

Comment 1 Marian Rehak 2021-09-16 13:15:54 UTC

Created nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 2004933]

Comment 2 Product Security DevOps Team 2021-09-16 18:21:27 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.