CVE-2021-41177

 

Published at: - 26-10-2021 12:15

Last modified: - 26-10-2022 05:26

Total changes: - 3

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`.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fj39-4qx4-m3f2
• https://hackerone.com/reports/1265709
• https://github.com/nextcloud/server/pull/28728
• GLSA-202208-17-Third Party Advisory

 

Keywords

NVD

 

CVE-2021-41177

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures