CVE-2018-8256 Code injection in Microsoft.PowerShell.Archive
Remote attackers can execute arbitrary code by tricking users into opening specially crafted files in Microsoft PowerShell.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2018-8256?
CVE-2018-8256 is a high-severity code injection vulnerability in Microsoft Windows 10, published on 14 Nov 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Which versions are affected by CVE-2018-8256?
It affects 10 products.
Products include Microsoft Microsoft.powershell.archive, Microsoft Powershell Core, Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1 and 4 more.
How do I fix CVE-2018-8256?
No fix has been published for CVE-2018-8256 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2018-8256 being exploited?
There is no known exploitation of CVE-2018-8256 in the wild and no public exploit code.
Sources
Also known as GHSA-44rm-q29m-7pfp.