CVE-2016-9461

MEDIUM

Nextcloud Server < 9.0.52 - Improper Access Control

Title source: rule

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.

References (9)

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/97276

[Issue Tracking, Patch, Third Party Advisory] https://github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc

View Patch ZIP pw:eip

[Issue Tracking, Patch, Third Party Advisory] https://github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547

View Patch ZIP pw:eip

[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

[Exploit, Third Party Advisory] https://hackerone.com/reports/145950

[Patch, Vendor Advisory] https://nextcloud.com/security/advisory/?id=nc-sa-2016-004

[Patch, Vendor Advisory] https://owncloud.org/security/advisory/?id=oc-sa-2016-014

Scores

CVSS v3 4.3

EPSS 0.0076

EPSS Percentile 73.1%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Classification

CWE

CWE-284 CWE-275

Status published

Affected Products (3)

nextcloud/nextcloud_server < 9.0.52

owncloud/owncloud < 9.0.4

n/a/Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 < Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4

Timeline

Published Mar 28, 2017

Tracked Since Feb 18, 2026