CVE-2023-25820

Nextcloud Server and Enterprise Server missing brute force protection on password confirmation modal

Description

Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform, and Nextcloud Enterprise Server is the enterprise version of the file server software. In Nextcloud Server versions 25.0.x prior to 25.0.5 and versions 24.0.x prior to 24.0.10 as well as Nextcloud Enterprise Server versions 25.0.x prior to 25.0.4, 24.0.x prior to 24.0.10, 23.0.x prior to 23.0.12.5, 22.x prior to 22.2.0.10, and 21.x prior to 21.0.9.10, when an attacker gets access to an already logged in user session they can then brute force the password on the confirmation endpoint. Nextcloud Server should upgraded to 24.0.10 or 25.0.4 and Nextcloud Enterprise Server should upgraded to 21.0.9.10, 22.2.10.10, 23.0.12.5, 24.0.10, or 25.0.4 to receive a patch. No known workarounds are available.

Category

4.2
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.13%
Vendor Advisory github.com
Affected: nextcloud security-advisories
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-36g6-wjx2-333x vendor advisory
https://github.com/nextcloud/server/pull/36489 patch
https://hackerone.com/reports/1842114 third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-25820?
CVE-2023-25820 has been scored as a medium severity vulnerability.
How to fix CVE-2023-25820?
To fix CVE-2023-25820, 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-2023-25820 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-25820 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-25820?
CVE-2023-25820 affects nextcloud security-advisories.
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