Bug 2218764 (CVE-2023-32320)

Summary:	CVE-2023-32320 nextcloud-server: brute force protection allows to send more requests than intended
Product:	[Other] Security Response	Reporter:	TEJ RATHI <trathi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nextcloud-server 25.0.7, nextcloud-server 26.0.2	Doc Type:	---
Doc Text:	A vulnerability was discovered in Nextcloud-Server. When multiple requests are sent in parallel, all of them were executed even if the amount of faulty requests succeeded the limit by the time the response is sent to the client. This allowed to send as many requests the server could handle in parallel to bruteforce protected details instead of the configured limit (default 8).	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-07-04 07:04:24 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:	2218765, 2218767, 2218768, 2218769, 2218770, 2218771, 2218772, 2218773, 2218774, 2218775, 2218777
Bug Blocks:

Description TEJ RATHI 2023-06-30 06:36:49 UTC

Nextcloud Server is a data storage system for Nextcloud, a self-hosted productivity platform. When multiple requests are sent in parallel, all of them were executed even if the amount of faulty requests succeeded the limit by the time the response was sent to the client. This allowed someone to send as many requests the server could handle in parallel to bruteforce protected details instead of the configured limit, default 8. Nextcloud Server versions 25.0.7 and 26.0.2 and Nextcloud Enterprise Server versions 21.0.9.12, 22.2.10.12, 23.0.12.7, 24.0.12.2, 25.0.7 and 26.0.2 contain patches for this issue.

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qphh-6xh7-vffg
https://github.com/nextcloud/server/pull/38274
https://hackerone.com/reports/1918525

Comment 1 TEJ RATHI 2023-06-30 06:37:11 UTC

Created nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 2218765]

Comment 2 TEJ RATHI 2023-06-30 06:39:38 UTC

Created nextcloud:23/nextcloud tracking bugs for this issue:

Affects: epel-all [bug 2218767]
Affects: fedora-all [bug 2218770]


Created nextcloud:24/nextcloud tracking bugs for this issue:

Affects: epel-all [bug 2218768]
Affects: fedora-all [bug 2218771]


Created nextcloud:nextcloud-18/nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 2218772]


Created nextcloud:nextcloud-19/nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 2218773]


Created nextcloud:nextcloud-21/nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 2218774]


Created nextcloud:nextcloud-22/nextcloud tracking bugs for this issue:

Affects: epel-all [bug 2218769]
Affects: fedora-all [bug 2218775]


Created nextcloud:nextcloud-stable/nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 2218777]

Comment 3 Product Security DevOps Team 2023-07-04 07:04:22 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.