CVE-2017-12137 Privilege escalation in n/a

High 8.8 Published 24 Aug 2017 Updated 5 Aug 2024

Local users in a Xen PV guest can escalate privileges to the host OS via a flaw in map_grant_ref handling.

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-2017-12137?

CVE-2017-12137 is a high-severity vulnerability in Citrix Xenserver, published on 24 Aug 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to map_grant_ref.

Weakness: CWE-120

Which versions are affected by CVE-2017-12137?

It affects 3 products.

Products include Citrix Xenserver, Debian Debian Linux, Xen Xen.

How do I fix CVE-2017-12137?

Apply the vendor's patch.

Is CVE-2017-12137 being exploited?

There is no known exploitation of CVE-2017-12137 in the wild and no public exploit code.

All Citrix Xenserver vulnerabilities

Sources

Also known as ALPINE-CVE-2017-12137, DEBIAN-CVE-2017-12137, GHSA-fgc8-vw2h-qfxj, UBUNTU-CVE-2017-12137.