Note:
This project will be discontinued after December 13, 2021. [more]
2017-03-28
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.
| Products | Nextcloud_server, Owncloud |
| Type | Improper Access Control (CWE-284) |
| First patch |
https://github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc |
| Relevant file/s |
• ./apps/dav/lib/connector/sabre/objecttree.php (modified, +28, -5)
• ./apps/dav/tests/unit/connector/sabre/objecttree.php (modified, +20) • ./build/integration/features/bootstrap/WebDav.php (modified, +17, -1) • ./build/integration/features/webdav-related.feature (modified, +32) |
| Links |
• https://github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e
• https://github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9 • https://hackerone.com/reports/145950 • https://owncloud.org/security/advisory/?id=oc-sa-2016-014 • https://github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47 |
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