CVE-2021-41179

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Summary

CVECVE-2021-41179
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-10-25 22:15:00 UTC
Updated2021-10-29 15:06:00 UTC
DescriptionNextcloud is an open-source, self-hosted productivity platform. Prior to Nextcloud Server versions 20.0.13, 21.0.5, and 22.2.0, the Two-Factor Authentication wasn't enforced for pages marked as public. Any page marked as `@PublicPage` could thus be accessed with a valid user session that isn't authenticated. This particularly affects the Nextcloud Talk application, as this could be leveraged to gain access to any private chat channel without going through the Two-Factor flow. It is recommended that the Nextcloud Server be upgraded to 20.0.13, 21.0.5 or 22.2.0. There are no known workarounds aside from upgrading.

Risk And Classification

Problem Types: CWE-304

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nextcloud Server All All All All

References

ReferenceSourceLinkTags
HackerOne MISC hackerone.com
Two-Factor Authentication not enforced for pages marked as public · Advisory · nextcloud/security-advisories · GitHub CONFIRM github.com
Remove 2FA exemption from PublicPage annotation by LukasReschke · Pull Request #28725 · nextcloud/server · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 751535 OpenSUSE Security Update for nextcloud (openSUSE-SU-2021:1602-1)
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