CVE-2012-5525 Denial of service in n/a
Local PV guest administrators can crash the Xen hypervisor via a crafted GFN in the get_page_from_gfn hypercall, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-5525?
CVE-2012-5525 is a medium-severity denial of service vulnerability in Xen Xen, published on 13 Dec 2012. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The get_page_from_gfn hypercall function in Xen 4.2 allows local PV guest OS administrators to cause a denial of service (crash) via a crafted GFN that triggers a buffer over-read.
Which versions are affected by CVE-2012-5525?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2012-5525?
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-2012-5525 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-5525 exists.
Public exploit code: 1 Metasploit module.
Other vulnerabilities in Xen Xen
Sources
Also known as GHSA-wrrw-3jqq-qcvc.