4.3
MEDIUM
CVE-2016-9461
Nextcloud Server WebDAV Copy Action Permissions Bypass
Description

Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying edit check permissions on WebDAV copy actions. The WebDAV endpoint was not properly checking the permission on a WebDAV COPY action. This allowed an authenticated attacker with access to a read-only share to put new files in there. It was not possible to modify existing files.

INFO

Published Date :

March 28, 2017, 2:59 a.m.

Last Modified :

Oct. 9, 2019, 11:20 p.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2016-9461 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Owncloud owncloud
1 Nextcloud nextcloud_server
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-2016-9461.

URL Resource
http://www.securityfocus.com/bid/97276 Third Party Advisory VDB Entry
https://github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc Issue Tracking Patch Third Party Advisory
https://github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547 Issue Tracking Patch Third Party Advisory
https://github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e Issue Tracking Patch Third Party Advisory
https://github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47 Issue Tracking Patch Third Party Advisory
https://github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9 Issue Tracking Patch Third Party Advisory
https://hackerone.com/reports/145950 Exploit Third Party Advisory
https://nextcloud.com/security/advisory/?id=nc-sa-2016-004 Patch Vendor Advisory
https://owncloud.org/security/advisory/?id=oc-sa-2016-014 Patch Vendor Advisory

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-2016-9461 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-9461 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.

  • 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-275
  • Modified Analysis by [email protected]

    Mar. 12, 2019

    Action Type Old Value New Value
    Changed Reference Type http://www.securityfocus.com/bid/97276 No Types Assigned http://www.securityfocus.com/bid/97276 Third Party Advisory, VDB Entry
    Changed CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:* versions up to (including) 9.0.51 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions up to (including) 8.0.13 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions up to (including) 8.1.8 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions up to (including) 8.2.6 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions up to (including) 9.0.3 OR *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions up to (excluding) 9.0.52 *cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* versions up to (excluding) 9.0.4
  • CVE Modified by [email protected]

    Apr. 04, 2017

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/97276 [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 30, 2017

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:S/C:N/I:P/A:N)
    Added CVSS V3 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
    Changed Reference Type https://github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9 No Types Assigned https://github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547 No Types Assigned https://github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://hackerone.com/reports/145950 No Types Assigned https://hackerone.com/reports/145950 Exploit, Third Party Advisory
    Changed Reference Type https://nextcloud.com/security/advisory/?id=nc-sa-2016-004 No Types Assigned https://nextcloud.com/security/advisory/?id=nc-sa-2016-004 Patch, Vendor Advisory
    Changed Reference Type https://owncloud.org/security/advisory/?id=oc-sa-2016-014 No Types Assigned https://owncloud.org/security/advisory/?id=oc-sa-2016-014 Patch, Vendor Advisory
    Changed Reference Type https://github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e No Types Assigned https://github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47 No Types Assigned https://github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc No Types Assigned https://github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc Issue Tracking, Patch, Third Party Advisory
    Added CWE CWE-284
    Added CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud:9.0.51:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:owncloud:owncloud:8.0.13:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:owncloud:owncloud:8.1.8:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:owncloud:owncloud:8.2.6:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:owncloud:owncloud:9.0.3:*:*:*:*:*:*:* (and previous)
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-9461 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.11 }} 0.00%

score

0.43088

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability