CVE-2021-41177

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Summary

CVECVE-2021-41177
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-10-25 22:15:00 UTC
Updated2022-10-26 15:26:00 UTC
DescriptionNextcloud 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`.

Risk And Classification

Problem Types: CWE-799

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nextcloud Nextcloud Server All All All All

References

ReferenceSourceLinkTags
Rate-limits not working on instances without configured memory cache backend · Advisory · nextcloud/security-advisories · GitHub CONFIRM github.com
Add database ratelimiting backend by LukasReschke · Pull Request #28728 · nextcloud/server · GitHub MISC github.com
Nextcloud: Multiple Vulnerabilities (GLSA 202208-17) — Gentoo security GENTOO security.gentoo.org
HackerOne MISC hackerone.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 710590 Gentoo Linux Nextcloud Multiple Vulnerabilities (GLSA 202208-17)
  • 751535 OpenSUSE Security Update for nextcloud (openSUSE-SU-2021:1602-1)
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