CVE-2016-9377 Denial of service in n/a
Local HVM guest users can crash the guest OS by exploiting an IDT entry miscalculation in Xen on AMD systems lacking NRip support.
- 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-2016-9377?
CVE-2016-9377 is a medium-severity denial of service vulnerability in Xen Xen, published on 22 Feb 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service (guest crash) by leveraging IDT entry miscalculation.
Weakness: CWE-682
Which versions are affected by CVE-2016-9377?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2016-9377?
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-2016-9377 being exploited?
There is no known exploitation of CVE-2016-9377 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as ALPINE-CVE-2016-9377, DEBIAN-CVE-2016-9377, GHSA-27wj-6vjv-96mm, UBUNTU-CVE-2016-9377.