CVE-2023-28847

Public Exploit
Nextcloud Server missing brute force protection for passwords of password protected share links

Description

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.

Category

3.1
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.54%
Vendor Advisory github.com
Affected: nextcloud security-advisories
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r5wf-xj97-3w7w vendor advisory
https://github.com/nextcloud/server/pull/35057 patch issue tracking
https://hackerone.com/reports/1894653 third party advisory issue tracking exploit

Frequently Asked Questions

What is the severity of CVE-2023-28847?
CVE-2023-28847 has been scored as a low severity vulnerability.
How to fix CVE-2023-28847?
To fix CVE-2023-28847, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-28847 being actively exploited in the wild?
It is possible that CVE-2023-28847 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-28847?
CVE-2023-28847 affects nextcloud security-advisories.
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