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Test ID:1.3.6.1.4.1.25623.1.0.812745
Category:Mac OS X Local Security Checks
Title:Microsoft PowerShell Core DoS And Security Feature Bypass Vulnerabilities (MacOSX)
Summary:This host is missing an important security; update for PowerShell Core according to Microsoft security update January 2018.
Description:Summary:
This host is missing an important security
update for PowerShell Core according to Microsoft security update January 2018.

Vulnerability Insight:
Multiple flaws are due to:

- An error in the open source versions of PowerShell Core when improper
processing of XML documents by .NET Core occurs.

- An error in the open source versions of PowerShell Core where an attacker
could present a certificate that is marked invalid for a specific use,
but a .NET Core component uses it for that purpose. This action disregards
the Enhanced Key Usage tagging.

Vulnerability Impact:
Successful exploitation will allow remote
attackers to cause a denial of service to an application using PowerShell
to process requests and also to bypass security.

Affected Software/OS:
PowerShell Core version 6.0.0 before 6.0.1

Solution:
Update PowerShell Core to version 6.0.1 or
later.

CVSS Score:
5.0

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2018-0764
BugTraq ID: 102387
http://www.securityfocus.com/bid/102387
RedHat Security Advisories: RHSA-2018:0379
https://access.redhat.com/errata/RHSA-2018:0379
http://www.securitytracker.com/id/1040152
Common Vulnerability Exposure (CVE) ID: CVE-2018-0786
BugTraq ID: 102380
http://www.securityfocus.com/bid/102380
CopyrightCopyright (C) 2018 Greenbone Networks GmbH

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