CVE-2016-9463
Nextcloud/ownCloud SMB Anonymous Authentication Bypass Vulnerability
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.
INFO
Published Date :
March 28, 2017, 2:59 a.m.
Last Modified :
Oct. 9, 2019, 11:20 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.2
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-9463.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-9463 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-9463 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CWE HackerOne CWE-303 -
Reanalysis by [email protected]
Mar. 12, 2019
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:* versions up to (including) 9.0.53 *cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:* versions up to (including) 10.0.0 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions up to (including) 8.2.8 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions up to (including) 9.0.5 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions up to (including) 9.1.1 OR *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions up to (excluding) 9.0.54 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions from (including) 10.0.0 up to (excluding) 10.0.1 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (excluding) 8.2.9 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.4 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions from (including) 9.1.0 up to (excluding) 9.1.2 -
Initial Analysis by [email protected]
Mar. 30, 2017
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/nextcloud/apps/commit/b85ace6840b8a6704641086bc3b8eb8e81cb2274 No Types Assigned https://github.com/nextcloud/apps/commit/b85ace6840b8a6704641086bc3b8eb8e81cb2274 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://github.com/owncloud/apps/commit/16cbccfc946c8711721fa684d78135ca1fb64791 No Types Assigned https://github.com/owncloud/apps/commit/16cbccfc946c8711721fa684d78135ca1fb64791 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://github.com/owncloud/apps/commit/5d47e7b52646cf79edadd78ce10c754290cbb732 No Types Assigned https://github.com/owncloud/apps/commit/5d47e7b52646cf79edadd78ce10c754290cbb732 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://rhinosecuritylabs.com/2016/10/operation-ownedcloud-exploitation-post-exploitation-persistence/ No Types Assigned https://rhinosecuritylabs.com/2016/10/operation-ownedcloud-exploitation-post-exploitation-persistence/ Exploit, Technical Description, Third Party Advisory Changed Reference Type https://owncloud.org/security/advisory/?id=oc-sa-2016-017 No Types Assigned https://owncloud.org/security/advisory/?id=oc-sa-2016-017 Patch, Vendor Advisory Changed Reference Type https://hackerone.com/reports/148151 No Types Assigned https://hackerone.com/reports/148151 Exploit, Third Party Advisory Changed Reference Type https://github.com/owncloud/apps/commit/a0e07b7ddd5a5fd850a6e07f8457d05b76a300b3 No Types Assigned https://github.com/owncloud/apps/commit/a0e07b7ddd5a5fd850a6e07f8457d05b76a300b3 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://nextcloud.com/security/advisory/?id=nc-sa-2016-006 No Types Assigned https://nextcloud.com/security/advisory/?id=nc-sa-2016-006 Patch, Vendor Advisory Changed Reference Type https://github.com/nextcloud/apps/commit/decb91fd31f4ffab191cbf09ce4e5c55c67a4087 No Types Assigned https://github.com/nextcloud/apps/commit/decb91fd31f4ffab191cbf09ce4e5c55c67a4087 Issue Tracking, Patch, Third Party Advisory Added CWE CWE-287 Added CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud:10.0.0:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:nextcloud:nextcloud:9.0.53:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:owncloud:owncloud:8.2.8:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:owncloud:owncloud:9.0.5:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:owncloud:owncloud:9.1.1:*:*:*:*:*:*:* (and previous)
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-9463 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-9463
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.39 }} 0.09%
score
0.73882
percentile