Medium severity · published Feb 4, 2020
CVE-2019-15617
A missing check in Nextcloud Server 17.0.0 allowed an attacker to set up a new second factor when trying to login
5.4
CVSS
0.6%
EPSS
No
On KEV
Description
A missing check in Nextcloud Server 17.0.0 allowed an attacker to set up a new second factor when trying to login.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
Nextcloud Server · Nextcloud
before 17.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-15617
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-15617
Permissions Required
https://hackerone.com/reports/722748
Vendor Advisory
https://nextcloud.com/security/advisory/?id=NC-SA-2020-006
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