Medium severity · published Mar 28, 2018
CVE-2017-0936
Nextcloud Server before 11.0.7 and 12.0.5 suffers from an Authorization Bypass Through User-Controlled Key vulnerability
5.7
CVSS
0.8%
EPSS
No
On KEV
Description
Nextcloud Server before 11.0.7 and 12.0.5 suffers from an Authorization Bypass Through User-Controlled Key vulnerability. A missing ownership check allowed logged-in users to change the scope of app passwords of other users. Note that the app passwords themselves where neither disclosed nor could the error be misused to identify as another user.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
Nextcloud Server · Nextcloud
before 11.0.7; 12.0.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-0936
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-0936
Third Party Advisory
https://hackerone.com/reports/297751
Vendor Advisory
https://nextcloud.com/security/advisory/?id=nc-sa-2018-001
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