Bug 2151123 (CVE-2022-39334)

Summary:	CVE-2022-39334 nextcloud-client: nextcloudcmd incorrectly trusts bad TLS certificates
Product:	[Other] Security Response	Reporter:	TEJ RATHI <trathi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nextcloud-client 3.6.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2151133, 2151136
Bug Blocks:	2148826

Description TEJ RATHI 2022-12-06 08:13:13 UTC

Nextcloud desktop is the desktop sync client for Nextcloud. Versions prior to 3.6.1 would incorrectly trust invalid TLS certificates. A Man-in-the-middle attack is possible in case a user can be made running a nextcloudcmd CLI command locally. It is recommended that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this vulnerability.

https://hackerone.com/reports/1699740
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-82xx-98xv-4jxv
https://github.com/nextcloud/desktop/pull/5022
https://github.com/nextcloud/desktop/issues/4927

Comment 1 TEJ RATHI 2022-12-06 08:21:52 UTC

Created nextcloud-client tracking bugs for this issue:

Affects: epel-8 [bug 2151133]
Affects: fedora-35 [bug 2151136]