Description
The virtual filesystem in ownCloud Server before 6.0.9, 7.0.x before 7.0.7, and 8.0.x before 8.0.5 does not consider that NULL is a valid getPath return value, which allows remote authenticated users to bypass intended access restrictions and gain access to users files via a sharing link to a file with a deleted parent folder.
Remediation
References
Related Vulnerabilities
Moodle Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2017-15110)
Plone CMS Improper Access Control Vulnerability (CVE-2015-7315)
RubyGems Origin Validation Error Vulnerability (CVE-2017-0902)
Resin Application Server Permissions, Privileges, and Access Controls Vulnerability (CVE-2014-2966)
WordPress Plugin WC Duplicate Order Unspecified Vulnerability (1.3)