The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of OpenBSD: privilege escalation via xenodm

Synthesis of the vulnerability 

An attacker can bypass restrictions via xenodm of OpenBSD, in order to escalate his privileges.
Impacted products: OpenBSD.
Severity of this bulletin: 2/4.
Creation date: 04/12/2019.
Références of this threat: CERTFR-2019-AVI-606, CVE-2019-19520, VIGILANCE-VUL-31059.

Description of the vulnerability 

An attacker can bypass restrictions via xenodm of OpenBSD, in order to escalate his privileges.
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This cybersecurity announce impacts software or systems such as OpenBSD.

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

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

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this computer weakness alert.

Solutions for this threat 

OpenBSD: patch for xenodm.
A patch is available:
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/022_xenodm.patch.sig
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.6/common/011_xenodm.patch.sig
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Vigil@nce provides a network vulnerability bulletin. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system.