CVE-2022-31120: Federated share accepting/declining is not logged in audit log in Nextcloud Server

Description

Nextcloud server is an open source personal cloud solution. The audit log is used to get a full trail of the actions which has been incompletely populated. In affected versions federated share events were not properly logged which would allow brute force attacks to go unnoticed. This behavior exacerbates the impact of CVE-2022-31118. It is recommended that the Nextcloud Server is upgraded to 22.2.7, 23.0.4 or 24.0.0. There are no workarounds available.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Attack vector

Network

Complexity

Low

Privileges

High

User interaction

None

Confidentiality

Low

Integrity

None

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.9% · higher than 60% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

SE

security-advisories · nextcloud

>= 23.0.0, < 23.0.4; < 22.2.7 · source: vendor

NS

Nextcloud Server · Nextcloud

before 22.2.7; 23.0.0 before 23.0.4 · source: NVD