Vulnerability in Nextcloud Server
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.020 (79.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Nextcloud Server
- ownCloud
- Nextcloud Server & ownCloud Before 9.0.52 9.0.4 — versions Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- owncloud.org/security/advisory/ (Patch, Vendor Advisory)
- nextcloud.com/security/advisory/ (Patch, Vendor Advisory)
- www.securityfocus.com/bid/97276 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47 (Patch, Third Party Advisory, Issue Tracking)
- github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9 (Patch, Third Party Advisory, Issue Tracking)
- github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e (Patch, Third Party Advisory, Issue Tracking)
- github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547 (Patch, Third Party Advisory, Issue Tracking)
- hackerone.com/reports/145950 (Exploit, Third Party Advisory)
- github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2016-9461?
- CVE-2016-9461 is a medium-severity vulnerability in Nextcloud Server, classified under Permission Issues. CVSS score: 4.3/10. Published 2017-03-28.
- How severe is CVE-2016-9461?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2016-9461 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.