CVE-2017-0884

low-risk
Published 2017-04-05

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.

Do I need to act?

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0.10% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Nextcloud

References (4)

Third Party Advisory https://hackerone.com/reports/169680
Broken Link https://nextcloud.com/security/advisory/?id=nc-sa-2017-002
Third Party Advisory https://hackerone.com/reports/169680
Broken Link https://nextcloud.com/security/advisory/?id=nc-sa-2017-002
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal