Bug 1981816 (CVE-2021-32678)

Summary:	CVE-2021-32678 nextcloud: ratelimit not applied on OCS API responses
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
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
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Last Closed:	2021-07-13 21:55:04 UTC	Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1981817
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2021-07-13 13:36:08 UTC

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.0.11, and 21.0.3, ratelimits are not applied to OCS API responses. This affects any OCS API controller (`OCSController`) using the `@BruteForceProtection` annotation. Risk depends on the installed applications on the Nextcloud Server, but could range from bypassing authentication ratelimits or spamming other Nextcloud users. The vulnerability is patched in versions 19.0.13, 20.0.11, and 21.0.3. No workarounds aside from upgrading are known to exist.

Reference:
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-48rx-3gmf-g74j

Comment 1 Guilherme de Almeida Suckevicz 2021-07-13 13:36:41 UTC

Created nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 1981817]

Comment 2 Product Security DevOps Team 2021-07-13 21:55:04 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.