Podatność CVE-2021-41179


Publikacja: 2021-10-25   Modyfikacja: 2021-10-26

Opis:
Nextcloud 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.

Typ:

CWE-304

(Missing Critical Step in Authentication)

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:N/A:N)

Ogólna skala CVSS
Znaczenie
Łatwość wykorzystania
4/10
2.9/10
8/10
Wymagany dostęp
Złożoność ataku
Autoryzacja
Zdalny
Niska
Jednorazowa
Wpływ na poufność
Wpływ na integralność
Wpływ na dostępność
Częściowy
Brak
Brak
Affected software
Nextcloud -> Server 

 Referencje:
https://github.com/nextcloud/server/pull/28725
https://hackerone.com/reports/1322865
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-7hvh-rc6f-px23

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