CVE-2012-4535 Denial of service in n/a
Local guest administrators can cause a denial of service in the Xen hypervisor by setting an inappropriate VCPU deadline, consuming physical CPU resources.
- 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-2012-4535?
CVE-2012-4535 is a low-severity denial of service vulnerability in Xen Xen, published on 21 Nov 2012. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Xen 3.4 through 4.2, and possibly earlier versions, allows local guest OS administrators to cause a denial of service (Xen infinite loop and physical CPU consumption) by setting a VCPU with an "inappropriate deadline."
Weakness: CWE-399
Which versions are affected by CVE-2012-4535?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2012-4535?
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-2012-4535 being exploited?
There is no known exploitation of CVE-2012-4535 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2012-4535, GHSA-cjmp-9gj7-24m6.