Published: 28/03/2017 Updated: 09/10/2019

CVSS v2 Base Score: 4 | Impact Score: 2.9 | Exploitability Score: 8

CVSS v3 Base Score: 4.3 | Impact Score: 1.4 | Exploitability Score: 2.8

VMScore: 356

Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N

Nextcloud Server prior to 9.0.52 & ownCloud Server prior to 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.

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owncloud owncloud
nextcloud nextcloud server

CWE-284 https://owncloud.org/security/advisory/?id=oc-sa-2016-014 https://nextcloud.com/security/advisory/?id=nc-sa-2016-004 https://hackerone.com/reports/145950 https://github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9 https://github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47 https://github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e https://github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547 https://github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc http://www.securityfocus.com/bid/97276 https://nvd.nist.gov

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CVE-2016-9461

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