Bug 2189666 (CVE-2023-28847) - CVE-2023-28847 nextcloud: brute forcing password verification
Summary: CVE-2023-28847 nextcloud: brute forcing password verification
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2023-28847
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2189668 2189667
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-04-25 20:45 UTC by Chess Hazlett
Modified: 2023-04-26 01:40 UTC (History)
0 users

Fixed In Version:
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Clone Of:
Environment:
Last Closed: 2023-04-26 01:40:39 UTC
Embargoed:


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Description Chess Hazlett 2023-04-25 20:45:36 UTC
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. In Nextcloud Server 24.0.0 prior to 24.0.11 and 25.0.0 prior to 25.0.5; as well as Nextcloud Server Enterprise 23.0.0 prior to 23.0.12.6, 24.0.0 prior to 24.0.11, and 25.0.0 prior to 25.0.5; an attacker is not restricted in verifying passwords of share links so they can just start brute forcing the password. Nextcloud Server 24.0.11 and 25.0.5 and Nextcloud Enterprise Server 23.0.12.6, 24.0.11, and 25.0.5 contain a fix for this issue. No known workarounds are available.

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r5wf-xj97-3w7w
https://hackerone.com/reports/1894653
https://github.com/nextcloud/server/pull/35057

Comment 1 Chess Hazlett 2023-04-25 20:45:54 UTC
Created nextcloud tracking bugs for this issue:

Affects: epel-8 [bug 2189667]
Affects: fedora-all [bug 2189668]

Comment 2 Product Security DevOps Team 2023-04-26 01:40:37 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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