CVE-2012-4539 Denial of service in n/a
Local guest administrators can cause a hypervisor denial of service via invalid arguments to a specific hypercall in 32-bit PV guests.
- 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-2012-4539?
CVE-2012-4539 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 4.0 through 4.2, when running 32-bit x86 PV guests on 64-bit hypervisors, allows local guest OS administrators to cause a denial of service (infinite loop and hang or crash) via invalid arguments to GNTTABOP_get_status_frames, aka "Grant table hypercall infinite loop DoS vulnerability."
Weakness: CWE-399
Which versions are affected by CVE-2012-4539?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2012-4539?
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-2012-4539 being exploited?
There is no known exploitation of CVE-2012-4539 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2012-4539, GHSA-fh46-gpfm-wfxc.