CVEs-PoC/2017/CVE-2017-0883.md

### [CVE-2017-0883](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0883)
![](https://img.shields.io/static/v1?label=Product&message=Nextcloud%20Server&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Permission%20Issues%20(CWE-275)&color=brighgreen)

### 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