8.1

CVE-2016-9463

Exploit
Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.1.2, 9.0.6, and 8.2.9 suffer from SMB User Authentication Bypass. Nextcloud/ownCloud include an optional and not by default enabled SMB authentication component that allows authenticating users against an SMB server. This backend is implemented in a way that tries to connect to a SMB server and if that succeeded consider the user logged-in. The backend did not properly take into account SMB servers that have any kind of anonymous auth configured. This is the default on SMB servers nowadays and allows an unauthenticated attacker to gain access to an account without valid credentials. Note: The SMB backend is disabled by default and requires manual configuration in the Nextcloud/ownCloud config file. If you have not configured the SMB backend then you're not affected by this vulnerability.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nextcloud ≫ Nextcloud Server Version < 9.0.54
Nextcloud ≫ Nextcloud Server Version >= 10.0.0 < 10.0.1
Owncloud ≫ Owncloud Version >= 8.2.0 < 8.2.9
Owncloud ≫ Owncloud Version >= 9.0.0 < 9.0.4
Owncloud ≫ Owncloud Version >= 9.1.0 < 9.1.2
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 4.1% 0.894
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.1 2.2 5.9
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 6.8 8.6 6.4
AV:N/AC:M/Au:N/C:P/I:P/A:P
CWE-287 Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

CWE-303 Incorrect Implementation of Authentication Algorithm

The requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect.

https://github.com/nextcloud/apps/commit/b85ace6840b8a6704641086bc3b8eb8e81cb2274
Patch
Third Party Advisory
Issue Tracking
https://github.com/nextcloud/apps/commit/decb91fd31f4ffab191cbf09ce4e5c55c67a4087
Patch
Third Party Advisory
Issue Tracking
https://github.com/owncloud/apps/commit/16cbccfc946c8711721fa684d78135ca1fb64791
Patch
Third Party Advisory
Issue Tracking
https://github.com/owncloud/apps/commit/5d47e7b52646cf79edadd78ce10c754290cbb732
Patch
Third Party Advisory
Issue Tracking
https://github.com/owncloud/apps/commit/a0e07b7ddd5a5fd850a6e07f8457d05b76a300b3
Patch
Third Party Advisory
Issue Tracking
https://hackerone.com/reports/148151
Third Party Advisory
Exploit
https://nextcloud.com/security/advisory/?id=nc-sa-2016-006
Patch
Vendor Advisory
https://owncloud.org/security/advisory/?id=oc-sa-2016-017
Patch
Vendor Advisory
https://rhinosecuritylabs.com/2016/10/operation-ownedcloud-exploitation-post-exploitation-persistence/
Third Party Advisory
Exploit
Technical Description