CVE-2017-17044 Denial of service in n/a
A guest OS user can cause a host OS hang via an infinite loop triggered by mishandled Populate on Demand errors in Xen.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-17044?
CVE-2017-17044 is a medium-severity denial of service vulnerability in Xen Xen, published on 28 Nov 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in Xen through 4.9.x allowing HVM guest OS users to cause a denial of service (infinite loop and host OS hang) by leveraging the mishandling of Populate on Demand (PoD) errors.
Which versions are affected by CVE-2017-17044?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2017-17044?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2017-17044 being exploited?
There is no known exploitation of CVE-2017-17044 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as ALPINE-CVE-2017-17044, DEBIAN-CVE-2017-17044, GHSA-pfw4-6v7q-26m4, UBUNTU-CVE-2017-17044.