Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Nextcloud Server | <= 9.0.54 |
Related Weaknesses (CWE)
References
- https://hackerone.com/reports/169680Third Party Advisory
- https://nextcloud.com/security/advisory/?id=nc-sa-2017-001PatchVendor Advisory
- https://hackerone.com/reports/169680Third Party Advisory
- https://nextcloud.com/security/advisory/?id=nc-sa-2017-001PatchVendor Advisory
FAQ
What is CVE-2017-0883?
CVE-2017-0883 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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 t...
How severe is CVE-2017-0883?
CVE-2017-0883 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-0883?
Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Nextcloud Server.