CVE-2017-0883

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.

Score

CVSS 3.0 6.4 Medium

Status

Modified - support@hackerone.com

Published

2017-04-05

Last modified

2024-08-05

Weaknesses

CWE-275, CWE-732

Affected products

• Nextcloud Server (Nextcloud)

References

• https://hackerone.com/reports/169680
• https://nextcloud.com/security/advisory/?id=nc-sa-2017-001