CVE-2016-9461

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

Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4

CVSS v3.0 NVD

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

CVSS v2.0 NVD

4.0 MEDIUMAV:N/AC:L/Au:S/C:N/I:P/A:N

EPSS

2.00% chance of exploitation in the next 30 days, 80th percentile

Published

2017-03-28

Updated

2024-08-06

Proof-of-concept exploits (1)

• https://hackerone.com/reports/145950

Security advisories

• https://nextcloud.com/security/advisory/?id=nc-sa-2016-004
• https://owncloud.org/security/advisory/?id=oc-sa-2016-014
• http://www.securityfocus.com/bid/97276
• nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc
• owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547

References

• CVE Record
• NVD entry