Bug 2172792 (CVE-2023-25579)

Summary:	CVE-2023-25579 nextcloud: potential directory traversal in OC\Files\Node\Folder::getFullPath
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	the 'OC\Files\Node\Folder::getFullPath()' function was validating and normalizing the string in the wrong order. The function is used in the 'newFile()' and 'newFolder()' items, which may allow to creation of paths outside of ones own space and overwriting data from other users with crafted paths.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-02-23 11:35:28 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:	2172793, 2172794
Bug Blocks:

Description Dhananjay Arunesh 2023-02-23 06:09:38 UTC

Nextcloud server is a self hosted home cloud product. In affected versions the 'OC\Files\Node\Folder::getFullPath()' function was validating and normalizing the string in the wrong order. The function is used in the 'newFile()' and 'newFolder()' items, which may allow to creation of paths outside of ones own space and overwriting data from other users with crafted paths. This issue has been addressed in versions 25.0.2, 24.0.8, and 23.0.12. Users are advised to upgrade. There are no known workarounds for this issue.

References:
https://github.com/nextcloud/server/pull/35074
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-273v-9h7x-p68v

Comment 1 Dhananjay Arunesh 2023-02-23 06:10:06 UTC

Created nextcloud tracking bugs for this issue:

Affects: epel-all [bug 2172794]
Affects: fedora-all [bug 2172793]

Comment 2 Product Security DevOps Team 2023-02-23 11:35:26 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.