Vulnerability Description
A missing user check in Nextcloud prior to 20.0.6 inadvertently populates a user's own credentials for other users external storage configuration when not already configured yet.
CVSS Score
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Nextcloud Server | < 20.0.6 |
| Fedoraproject | Fedora | 34 |
Related Weaknesses (CWE)
References
- https://github.com/nextcloud/server/issues/24600ExploitIssue TrackingPatch
- https://github.com/nextcloud/server/pull/25224PatchThird Party Advisory
- https://hackerone.com/reports/1061591Issue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://nextcloud.com/security/advisory/?id=NC-SA-2021-004Broken LinkVendor Advisory
- https://github.com/nextcloud/server/issues/24600ExploitIssue TrackingPatch
- https://github.com/nextcloud/server/pull/25224PatchThird Party Advisory
- https://hackerone.com/reports/1061591Issue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://nextcloud.com/security/advisory/?id=NC-SA-2021-004Broken LinkVendor Advisory
FAQ
What is CVE-2021-22877?
CVE-2021-22877 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A missing user check in Nextcloud prior to 20.0.6 inadvertently populates a user's own credentials for other users external storage configuration when not already configured yet.
How severe is CVE-2021-22877?
CVE-2021-22877 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-22877?
Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Nextcloud Server, Fedoraproject Fedora.