by Kastro
Paper/Archive/CVE-2021-22915

CVE-2021-22915

hackerone — Nextcloud server before 19.0.11, 20.0.10, 21.0.2 is vulnerable to brute force attacks due to lack of inclusion of IPv6 subnets in rate-li…

EPSS 2%CVSS 9.8
critical.is priorityof 100
45
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 77.7.777 × 2015.5No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

Nextcloud server before 19.0.11, 20.0.10, 21.0.2 is vulnerable to brute force attacks due to lack of inclusion of IPv6 subnets in rate-limiting considerations. This could potentially result in an attacker bypassing rate-limit controls such as the Nextcloud brute-force protection.

Affected

ProductAffectedFixed inSource
Nextcloud ServerFixed in 19.0.11, 20.0.10, 21.0.2–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refhackerone.com/reports/1154003refnextcloud.com/security/advisory/?id=NC-SA-2021-009advisorylists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4Sadvisorylists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AGXGR6HYGQ6MZXISMJEHCOXRGRFRUFMA