Bug 1921305 (CVE-2020-8293)

Summary:	CVE-2020-8293 nextcloud: input validation issue allows users to store unlimited data in workflow rules
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ce, james.hogarth
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2021-01-28 02:41:35 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1921306
Bug Blocks:

Description Pedro Sampaio 2021-01-27 21:01:56 UTC

A missing input validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows users to store unlimited data in workflow rules causing load and potential DDoS on later interactions and usage with those rules.

https://hackerone.com/reports/1018146
https://nextcloud.com/security/advisory/?id=NC-SA-2021-001

Comment 1 Pedro Sampaio 2021-01-27 21:02:20 UTC

Created nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 1921306]

Comment 2 Christopher Engelhard 2021-01-27 22:02:02 UTC

Can whoever manages these monitoring scripts please make them check if any affected versions are actually in the repositories?

Comment 3 Product Security DevOps Team 2021-01-28 02:41:35 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.