CVE-2019-1365 Memory corruption in Windows

Critical 9.9 Published Updated

An attacker can exploit a buffer overflow in Microsoft IIS Server to execute arbitrary code with system privileges, escaping the sandbox.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2019-1365?

CVE-2019-1365 is a critical memory corruption vulnerability in Microsoft Windows 10, published on 10 Oct 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the length of a buffer prior to copying memory to it.An attacker who successfully exploited this vulnerability can allow an unprivileged function ran by the user to execute code in the context of NT AUTHORITY\system escaping the Sandbox.The security update addresses the vulnerability by correcting how Microsoft IIS Server sanitizes web requests., aka 'Microsoft IIS Server Elevation of Privilege Vulnerability'.

Which versions are affected by CVE-2019-1365?

It affects 8 products.

Products include Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2008, Microsoft Windows Server 2012 and 2 more.

How do I fix CVE-2019-1365?

No fix has been published for CVE-2019-1365 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-1365 being exploited?

There is no known exploitation of CVE-2019-1365 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-rchr-fxr5-m4xq.

Is CVE-2019-1365 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free