Vulnerability Description
Nextcloud is an open-source, self-hosted productivity platform. Prior to versions 20.0.13, 21.0.5, and 22.2.0, Nextcloud Server did not implement a database backend for rate-limiting purposes. Any component of Nextcloud using rate-limits (as as `AnonRateThrottle` or `UserRateThrottle`) was thus not rate limited on instances not having a memory cache backend configured. In the case of a default installation, this would notably include the rate-limits on the two factor codes. It is recommended that the Nextcloud Server be upgraded to 20.0.13, 21.0.5, or 22.2.0. As a workaround, enable a memory cache backend in `config.php`.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Nextcloud Server | < 20.0.13 |
Related Weaknesses (CWE)
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fj39-4Third Party Advisory
- https://github.com/nextcloud/server/pull/28728PatchThird Party Advisory
- https://hackerone.com/reports/1265709Permissions RequiredThird Party Advisory
- https://security.gentoo.org/glsa/202208-17Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fj39-4Third Party Advisory
- https://github.com/nextcloud/server/pull/28728PatchThird Party Advisory
- https://hackerone.com/reports/1265709Permissions RequiredThird Party Advisory
- https://security.gentoo.org/glsa/202208-17Third Party Advisory
FAQ
What is CVE-2021-41177?
CVE-2021-41177 is a vulnerability with a CVSS score of 8.1 (HIGH). Nextcloud is an open-source, self-hosted productivity platform. Prior to versions 20.0.13, 21.0.5, and 22.2.0, Nextcloud Server did not implement a database backend for rate-limiting purposes. Any com...
How severe is CVE-2021-41177?
CVE-2021-41177 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-41177?
Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Nextcloud Server.