Vulnerability Monitor

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CVE-2017-0884

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a creation of folders in read-only folders despite lacking permissions issue. Due to a logical error in the file caching layer an authenticated adversary is able to create empty folders inside a shared folder. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Published

2017-04-05T20:59:00.243

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 4.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-275
Type: Primary
CWE-732

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	nextcloud	nextcloud_server	< 9.0.55	Yes
Application	nextcloud	nextcloud_server	< 10.0.2	Yes

References

https://hackerone.com/reports/169680 Third Party Advisory ([email protected])
https://nextcloud.com/security/advisory/?id=nc-sa-2017-002 Broken Link, Patch, Vendor Advisory ([email protected])
https://hackerone.com/reports/169680 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://nextcloud.com/security/advisory/?id=nc-sa-2017-002 Broken Link, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)