Bug 1902136 (CVE-2020-8236)

Summary:	CVE-2020-8236 nextcloud: PIN for passwordless WebAuthn is asked for but not verified
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	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:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2021-10-28 05:27:44 UTC	Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1902138
Bug Blocks:

Description Dhananjay Arunesh 2020-11-27 03:54:36 UTC

A  wrong configuration in Nextcloud Server 19.0.1 incorrectly made the user feel the passwordless WebAuthn is also a two factor verification by asking for the PIN of the passwordless WebAuthn but not verifying it.

References:
https://hackerone.com/reports/924393
https://nextcloud.com/security/advisory/?id=NC-SA-2020-037

Comment 1 Dhananjay Arunesh 2020-11-27 04:24:41 UTC

Created nextcloud tracking bugs for this issue:

Affects: fedora-32 [bug 1902138]