Vulnerability Details CVE-2020-8223
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 50.3%
CVSS Severity
CVSS v3 Score 6.5
CVSS v2 Score 3.5
References
- https://hackerone.com/reports/889243
- 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-2020-029
- https://hackerone.com/reports/889243
- 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-2020-029
Products affected by CVE-2020-8223
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cpe:2.3:a:nextcloud:nextcloud_server:19.0.0
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cpe:2.3:o:fedoraproject:fedora:32
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cpe:2.3:o:fedoraproject:fedora:33