Vulnerability Description
A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves.
CVSS Score
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Nextcloud Server | 19.0.0 |
| Fedoraproject | Fedora | 32 |
Related Weaknesses (CWE)
References
- https://hackerone.com/reports/889243ExploitThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-029Vendor Advisory
- https://hackerone.com/reports/889243ExploitThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-029Vendor Advisory
FAQ
What is CVE-2020-8223?
CVE-2020-8223 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves.
How severe is CVE-2020-8223?
CVE-2020-8223 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-2020-8223?
Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Nextcloud Server, Fedoraproject Fedora.