CVE-2017-17565 Denial of service in n/a
A guest user can crash the host OS via an assertion failure in Xen when shadow and log-dirty modes are enabled.
- 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-2017-17565?
CVE-2017-17565 is a medium-severity denial of service vulnerability in Xen Xen, published on 12 Dec 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 PV guest OS users to cause a denial of service (host OS crash) if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P.
Weakness: CWE-20
Which versions are affected by CVE-2017-17565?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2017-17565?
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-2017-17565 being exploited?
There is no known exploitation of CVE-2017-17565 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as ALPINE-CVE-2017-17565, DEBIAN-CVE-2017-17565, GHSA-rv23-xwvf-5q5q, UBUNTU-CVE-2017-17565.