Medium severity · published Mar 28, 2017
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
4.3
CVSS
2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
Nextcloud Server · Nextcloud
before 9.0.52 · source: NVD
OW
Owncloud · Owncloud
before 9.0.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-9461
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-9461
Third Party Advisory
http://www.securityfocus.com/bid/97276
Issue Tracking
https://github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc
Issue Tracking
https://github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547
Issue Tracking
https://github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e
Issue Tracking
https://github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47
Issue Tracking
https://github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9
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