cve/2017/CVE-2017-0883.md

CVE-2017-0883

Description

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

POC

Reference

• https://hackerone.com/reports/169680

Github

• https://github.com/ARPSyndicate/cvemon