Bug 1988993 (CVE-2021-32726) - CVE-2021-32726 nextcloud: server security bypass
Summary: CVE-2021-32726 nextcloud: server security bypass
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-32726
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1988994
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-08-02 08:50 UTC by Dhananjay Arunesh
Modified: 2021-08-02 13:07 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2021-08-02 13:07:03 UTC
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Description Dhananjay Arunesh 2021-08-02 08:50:15 UTC 
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, webauthn tokens were not deleted after a user has been deleted. If a victim reused an earlier used username, the previous user could gain access to their account. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.

References:
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg
Comment 1 Dhananjay Arunesh 2021-08-02 08:58:17 UTC 
Created nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 1988994]
Comment 2 Product Security DevOps Team 2021-08-02 13:07:03 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.
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