Vulnerability · Published Oct 5, 2020 · Assigned by hackerone
CVE-2020-8223
Medium 6.5
In plain English
A medium-severity privilege mismanagement in Nextcloud Server. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities).
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.5%top 26.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Nextcloud Server | Fixed in 19.0.1 |
Weakness: CWE-269
References
- https://hackerone.com/reports/889243 x_refsource_MISC
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-029 x_refsource_MISC
- FEDORA-2020-c9863904de vendor-advisory, x_refsource_FEDORA
- FEDORA-2020-050aaa14f7 vendor-advisory, x_refsource_FEDORA