CVE-2014-1666 Missing authorization in n/a
Local paravirtualized guests can bypass restrictions on physical device operations to cause denial of service or potentially escalate privileges.
- 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-2014-1666?
CVE-2014-1666 is a high-severity missing authorization vulnerability in Xen Xen, published on 26 Jan 2014. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which allows local PV guests to cause a denial of service (host or guest malfunction) or possibly gain privileges via unspecified vectors.
Weakness: CWE-264
Which versions are affected by CVE-2014-1666?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2014-1666?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2014-1666 being exploited?
There is no known exploitation of CVE-2014-1666 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2014-1666, GHSA-3fc4-5q4x-p7j8.