CVE-2022-31118

Missing brute force protection on cloud federation sharing in Nextcloud Server

CVSS 6.5 MEDIUMEPSS 0.6%CWE-770

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

04 Aug 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Nextcloud server is an open source personal cloud solution. In affected versions an attacker could brute force to find if federated sharing is being used and potentially try to brute force access tokens for federated shares (`a-zA-Z0-9` ^ 15). It is recommended that the Nextcloud Server is upgraded to 22.2.9, 23.0.6 or 24.0.2. Users unable to upgrade may disable federated sharing via the Admin Sharing settings in `index.php/settings/admin/sharing`.

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

Affected products

nextcloud · security-advisories

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References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2vwh-5v93-3vcq https://github.com/nextcloud/server/pull/32843/commits/6eb692da7fe73c899cb6a8d2aa045eddb1f14018