CVE-2023-32320

Nextcloud Server's brute force protection allows someone to send more requests than intended

Description

Nextcloud Server is a data storage system for Nextcloud, a self-hosted productivity platform. When multiple requests are sent in parallel, all of them were executed even if the amount of faulty requests succeeded the limit by the time the response was sent to the client. This allowed someone to send as many requests the server could handle in parallel to bruteforce protected details instead of the configured limit, default 8. Nextcloud Server versions 25.0.7 and 26.0.2 and Nextcloud Enterprise Server versions 21.0.9.12, 22.2.10.12, 23.0.12.7, 24.0.12.2, 25.0.7 and 26.0.2 contain patches for this issue.

Category

8.7
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.41%
Vendor Advisory github.com
Affected: nextcloud security-advisories
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qphh-6xh7-vffg patch vendor advisory
https://github.com/nextcloud/server/pull/38274 patch
https://hackerone.com/reports/1918525 permissions required

Frequently Asked Questions

What is the severity of CVE-2023-32320?
CVE-2023-32320 has been scored as a high severity vulnerability.
How to fix CVE-2023-32320?
To fix CVE-2023-32320, 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-2023-32320 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-32320 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-2023-32320?
CVE-2023-32320 affects nextcloud security-advisories.
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