Home/CVE/A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher p
CVE

CVE-2020-8223

A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher p

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.

MEDIUM · CVSS 6.5 EPSS 0.00141
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-269Improper Privilege Management
CWE-269Improper Privilege Management
▤

Affected Products & Versions

2
nextcloud serverall versions
fedoraproject fedoraall versions
⚠

Public Exploits & PoCs

1
pochackerone.com · 889243hackerone.com
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Oct 2020 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T7FX3O6SJE2S52I2HAA4DSTUIISP5BNA/
https://nextcloud.com/security/advisory/?id=NC-SA-2020-029Vendor Advisory
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