CVE-2017-8903 Privilege escalation in n/a

High 8.8 Published 11 May 2017 Updated 5 Aug 2024

A flaw in Xen hypervisor page table handling allows guest users to execute arbitrary code on the host, enabling full system compromise.

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-2017-8903?

CVE-2017-8903 is a high-severity vulnerability in Xen Xen, published on 11 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213.

Which versions are affected by CVE-2017-8903?

It affects 1 product.

Products include Xen Xen.

How do I fix CVE-2017-8903?

Apply the vendor's patch.

Is CVE-2017-8903 being exploited?

There is no known exploitation of CVE-2017-8903 in the wild and no public exploit code.

All Xen Xen vulnerabilities

Sources

Also known as ALPINE-CVE-2017-8903, DEBIAN-CVE-2017-8903, GHSA-qx4f-g697-2347, UBUNTU-CVE-2017-8903.