4.3

CVE-2016-9464

Exploit

Nextcloud Server before 9.0.54 and 10.0.0 suffers from an improper authorization check on removing shares. The Sharing Backend as implemented in Nextcloud does differentiate between shares to users and groups. In case of a received group share, users should be able to unshare the file to themselves but not to the whole group. The previous API implementation simply unshared the file to all users in the group.

Data is provided by the National Vulnerability Database (NVD)
Nextcloud ≫ Nextcloud Server Version < 9.0.54
Nextcloud ≫ Nextcloud Server Version10.0 Updaterc1
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.29% 0.522
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 4.3 2.8 1.4
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
nvd@nist.gov 4 8 2.9
AV:N/AC:L/Au:S/C:N/I:P/A:N
CWE-285 Improper Authorization

The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

http://www.securityfocus.com/bid/97287
Third Party Advisory
VDB Entry
https://hackerone.com/reports/153905
Third Party Advisory
Exploit