WebDAV Copy Action Vulnerability

CVE-2016-9461 · MEDIUM Severity

AV:N/AC:L/AU:S/C:N/I:P/A:N

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.

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