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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2016-9463 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/nextcloud/apps/commit/b85ace6840b8a6704641086bc3b8eb8e81cb2274 Issue Tracking  Patch  Third Party Advisory 
https://github.com/nextcloud/apps/commit/decb91fd31f4ffab191cbf09ce4e5c55c67a4087 Issue Tracking  Patch  Third Party Advisory 
https://github.com/owncloud/apps/commit/16cbccfc946c8711721fa684d78135ca1fb64791 Issue Tracking  Patch  Third Party Advisory 
https://github.com/owncloud/apps/commit/5d47e7b52646cf79edadd78ce10c754290cbb732 Issue Tracking  Patch  Third Party Advisory 
https://github.com/owncloud/apps/commit/a0e07b7ddd5a5fd850a6e07f8457d05b76a300b3 Issue Tracking  Patch  Third Party Advisory 
https://hackerone.com/reports/148151 Exploit  Third Party Advisory 
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/ Exploit  Technical Description  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-287 Improper Authentication cwe source acceptance level NIST  
CWE-303 Incorrect Implementation of Authentication Algorithm HackerOne  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-9463
NVD Published Date:
03/27/2017
NVD Last Modified:
10/09/2019
Source:
HackerOne