Medium severity · published Apr 5, 2017
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
4.3
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
Nextcloud Server · Nextcloud
before 9.0.55; 10.0.0 before 10.0.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-0884
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-0884
Third Party Advisory
https://hackerone.com/reports/169680
Broken Link
https://nextcloud.com/security/advisory/?id=nc-sa-2017-002
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