CVE-2013-1917 Denial of service in n/a
A PV guest user can crash the Xen hypervisor on 64-bit Intel hosts by triggering a specific fault sequence, causing a denial of service.
- 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-2013-1917?
CVE-2013-1917 is a low-severity denial of service vulnerability in Xen Xen, published on 13 May 2013. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction.
Weakness: CWE-20
Which versions are affected by CVE-2013-1917?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2013-1917?
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-2013-1917 being exploited?
There is no known exploitation of CVE-2013-1917 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2013-1917, GHSA-mrjv-6f7h-m3rj.