Description (CNA)
Nextcloud Server is a Nextcloud package that handles data storage. A vulnerability in federated share exists in versions prior to 19.0.11, 20.0.10, and 21.0.2. An attacker can gain access to basic information about users of a server by accessing a public link that a legitimate server user added as a federated share. This happens because Nextcloud supports sharing registered users with other Nextcloud servers, which can be done automatically when selecting the "Add server automatically once a federated share was created successfully" setting. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2 As a workaround, disable "Add server automatically once a federated share was created successfully" in the Nextcloud settings.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| nextcloud / security-advisories | affected < 19.0.11; affected >= 20.0.0, < 20.0.10; affected >= 21.0.0, < 21.0.2 |
CWE
CWE-284
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-j875-vr2q-h6x6
- https://hackerone.com/reports/1167853
- https://security.gentoo.org/glsa/202208-17
ADP enrichment
No English description supplied.