CVE-2017-8759 Microsoft .NET Framework Remote Code Execution

Exploited in the wild High 7.8 Published Updated

Remote attackers can execute arbitrary code via malicious documents or applications exploiting a code injection flaw in the .NET Framework.

Exploited in the wild
Since 3 Nov 2021
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2017-8759?

CVE-2017-8759 is a high-severity code injection vulnerability in Microsoft .Net Framework, published on 13 Sep 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to execute code remotely via a malicious document or application, aka ".NET Framework Remote Code Execution Vulnerability."

Weakness: CWE-94

Which versions are affected by CVE-2017-8759?

It affects 1 product.

Products include Microsoft .Net Framework.

How do I fix CVE-2017-8759?

No fix has been published for CVE-2017-8759 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 May 2022.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2017-8759 being exploited?

Yes. Attackers have exploited CVE-2017-8759 in the wild since at least 3 Nov 2021.

Public exploit code: 1 Exploit-DB entry and 16 proofs of concept on GitHub.

All Microsoft .Net Framework vulnerabilities

Sources

Also known as GHSA-rc4w-p9f6-7c7q.

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