Bug 2063924 (CVE-2021-41239) - CVE-2021-41239 nextcloud: possibility to enumerate other users on the instance
Summary: CVE-2021-41239 nextcloud: possibility to enumerate other users on the instance
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-41239
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2063925
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-03-14 16:16 UTC by Marian Rehak
Modified: 2022-03-14 23:01 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2022-03-14 23:01:26 UTC
Embargoed:

Attachments (Terms of Use)

Description Marian Rehak 2022-03-14 16:16:19 UTC 
In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled.

Reference:

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx
https://github.com/nextcloud/server/pull/29260
https://github.com/nextcloud/server/issues/27122
Comment 1 Marian Rehak 2022-03-14 16:16:34 UTC 
Created nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 2063925]
Comment 2 Product Security DevOps Team 2022-03-14 23:01:24 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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