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Test ID:1.3.6.1.4.1.25623.1.0.144865
Category:Web application abuses
Title:Nextcloud Server < 17.0.8, 18.x < 18.0.7, 19.0.0 Privilege Escalation Vulnerability (NC-SA-2020-029)
Summary:Nextcloud Server is prone to a privilege escalation vulnerability.
Description:Summary:
Nextcloud Server is prone to a privilege escalation vulnerability.

Vulnerability Insight:
A logic error in Nextcloud Server causes a privilege escalation allowing
malicious users to reshare with higher permissions than they got assigned themselves.

Affected Software/OS:
Nextcloud server versions prior 17.0.8, 18.x prior to 18.0.7 and 19.0.0.

Solution:
Update to version 17.0.8, 18.0.7, 19.0.1 or later.

CVSS Score:
3.5

CVSS Vector:
AV:N/AC:M/Au:S/C:N/I:P/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-8223
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T7FX3O6SJE2S52I2HAA4DSTUIISP5BNA/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/
https://hackerone.com/reports/889243
https://nextcloud.com/security/advisory/?id=NC-SA-2020-029
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