CVE-2020-8223
First published: Mon Oct 05 2020(Updated: )
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.
Credit: support@hackerone.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nextcloud Server | =19.0.0 | |
| Red Hat Fedora | =32 | |
| Red Hat Fedora | =33 |
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Reference Links
- https://hackerone.com/reports/889243
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T7FX3O6SJE2S52I2HAA4DSTUIISP5BNA/
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-029
- 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/
Frequently Asked Questions
What is the severity of CVE-2020-8223?
CVE-2020-8223 is considered a high severity vulnerability due to potential privilege escalation.
How do I fix CVE-2020-8223?
To fix CVE-2020-8223, users should upgrade to a patched version of Nextcloud Server beyond 19.0.0.
Who is affected by CVE-2020-8223?
CVE-2020-8223 affects Nextcloud Server version 19.0.0 and certain Fedora operating system versions.
What type of vulnerability is CVE-2020-8223?
CVE-2020-8223 is a logic error vulnerability that allows privilege escalation.
Can CVE-2020-8223 be exploited remotely?
Yes, CVE-2020-8223 can be exploited remotely by malicious users to gain higher permissions.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/author
- agent/references
- agent/weakness
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/description
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/nextcloud
- canonical/nextcloud server
- version/nextcloud server/19.0.0
- vendor/fedoraproject
- canonical/red hat fedora
- version/red hat fedora/32
- version/red hat fedora/33