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Vulnerability of OpenBSD: privilege escalation via Suauth User Login Class

Synthesis of the vulnerability 

An attacker can bypass restrictions via Suauth User Login Class of OpenBSD, in order to escalate his privileges.
Impacted software: OpenBSD.
Severity of this computer vulnerability: 2/4.
Creation date: 09/12/2019.
Références of this announce: VIGILANCE-VUL-31090.

Description of the vulnerability 

An attacker can bypass restrictions via Suauth User Login Class of OpenBSD, in order to escalate his privileges.
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This security announce impacts software or systems such as OpenBSD.

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

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this computer vulnerability announce.

Solutions for this threat 

OpenBSD: patch for Suauth User Login Class.
A patch is available:
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/023_suauth.patch.sig
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.6/common/012_suauth.patch.sig
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