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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
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 9.0.4affected
References
- https://owncloud.org/security/advisory/?id=oc-sa-2016-014 ↗
- https://nextcloud.com/security/advisory/?id=nc-sa-2016-004 ↗
- http://www.securityfocus.com/bid/97276 ↗
- https://github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47 ↗
- https://github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9 ↗
- https://github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e ↗
- https://github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547 ↗
- https://hackerone.com/reports/145950 ↗
- https://github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc ↗