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.
Published: 2017-04-05
Score: 6.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2017-1237 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.
History

No history.

Subscriptions

Nextcloud Nextcloud Server
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2024-08-05T13:18:06.386Z

Reserved: 2016-11-30T00:00:00.000Z

Link: CVE-2017-0883

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-04-05T20:59:00.197

Modified: 2026-05-13T00:24:29.033

Link: CVE-2017-0883

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses