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Vulnerability of Nextcloud Preferred Providers: privilege escalation via Signup Page Bruteforce

Synthesis of the vulnerability 

An attacker can bypass restrictions via Signup Page Bruteforce of Nextcloud Preferred Providers, in order to escalate his privileges.
Vulnerable systems: openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.
Severity of this threat: 2/4.
Creation date: 12/10/2020.
Références of this weakness: 922470, CVE-2020-8228, NC-SA-2020-033, openSUSE-SU-2020:1652-1, VIGILANCE-VUL-33536.

Description of the vulnerability 

An attacker can bypass restrictions via Signup Page Bruteforce of Nextcloud Pref...
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This computer vulnerability impacts software or systems such as openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this weakness bulletin is medium.

The trust level is of type confirmed by the editor, with an origin of intranet client.

An attacker with a expert ability can exploit this weakness.

Solutions for this threat 

Fixes for this vulnerability are not yet public.
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