Executive Summary

Informations
Name CVE-2016-9463 First vendor Publication 2017-03-27
Vendor Cve Last vendor Modification 2019-10-09

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 8.1
Base Score 8.1 Environmental Score 8.1
impact SubScore 5.9 Temporal Score 8.1
Exploitabality Sub Score 2.2
 
Attack Vector Network Attack Complexity High
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9463

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-287 Improper Authentication

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 3
Application 111

Sources (Detail)

Source Url
MISC https://github.com/nextcloud/apps/commit/b85ace6840b8a6704641086bc3b8eb8e81cb...
https://github.com/nextcloud/apps/commit/decb91fd31f4ffab191cbf09ce4e5c55c67a...
https://github.com/owncloud/apps/commit/16cbccfc946c8711721fa684d78135ca1fb64791
https://github.com/owncloud/apps/commit/5d47e7b52646cf79edadd78ce10c754290cbb732
https://github.com/owncloud/apps/commit/a0e07b7ddd5a5fd850a6e07f8457d05b76a300b3
https://hackerone.com/reports/148151
https://nextcloud.com/security/advisory/?id=nc-sa-2016-006
https://owncloud.org/security/advisory/?id=oc-sa-2016-017
https://rhinosecuritylabs.com/2016/10/operation-ownedcloud-exploitation-post-...

Alert History

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Date Informations
2021-09-11 01:23:03
  • Multiple Updates
2021-05-05 01:23:25
  • Multiple Updates
2021-05-04 12:54:38
  • Multiple Updates
2021-04-22 02:07:18
  • Multiple Updates
2021-03-27 01:19:37
  • Multiple Updates
2020-05-24 01:19:47
  • Multiple Updates
2020-05-23 02:01:49
  • Multiple Updates
2020-05-23 00:53:51
  • Multiple Updates
2019-10-10 05:19:35
  • Multiple Updates
2019-06-27 12:07:58
  • Multiple Updates
2019-06-26 12:07:57
  • Multiple Updates
2019-03-12 21:18:59
  • Multiple Updates
2019-02-12 12:03:22
  • Multiple Updates
2018-07-04 12:01:44
  • Multiple Updates
2018-06-14 12:05:09
  • Multiple Updates
2017-04-11 12:02:33
  • Multiple Updates
2017-03-30 21:23:11
  • Multiple Updates
2017-03-28 09:19:59
  • First insertion