CVE-2018-8256 — HIGH (8.8) — White Hats Nepal

Vulnerability Description

A remote code execution vulnerability exists when PowerShell improperly handles specially crafted files, aka "Microsoft PowerShell Remote Code Execution Vulnerability." This affects Windows RT 8.1, PowerShell Core 6.0, Microsoft.PowerShell.Archive 1.2.2.0, Windows Server 2016, Windows Server 2012, Windows Server 2008 R2, Windows Server 2019, Windows 7, Windows Server 2012 R2, PowerShell Core 6.1, Windows 10 Servers, Windows 10, Windows 8.1.

CVSS Score

8.8

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Microsoft	Microsoft.Powershell.Archive	1.2.2.0
Microsoft	Powershell Core	6.0
Microsoft	Windows 10	-
Microsoft	Windows 7	-
Microsoft	Windows 8.1	-
Microsoft	Windows Rt 8.1	-
Microsoft	Windows Server 2008	r2
Microsoft	Windows Server 2012	-
Microsoft	Windows Server 2016	-
Microsoft	Windows Server 2019	-

References

http://www.securityfocus.com/bid/105781Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042108Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8256PatchVendor Advisory
http://www.securityfocus.com/bid/105781Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042108Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8256PatchVendor Advisory

FAQ

What is CVE-2018-8256?

CVE-2018-8256 is a vulnerability with a CVSS score of 8.8 (HIGH). A remote code execution vulnerability exists when PowerShell improperly handles specially crafted files, aka "Microsoft PowerShell Remote Code Execution Vulnerability." This affects Windows RT 8.1, Po...

How severe is CVE-2018-8256?

CVE-2018-8256 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-8256?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Microsoft.Powershell.Archive, Microsoft Powershell Core, Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1.