CVE-2016-9382 Privilege escalation in n/a
Local guest users can escalate privileges or crash the system by exploiting improper handling of x86 task switches to VM86 mode.
- 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-2016-9382?
CVE-2016-9382 is a high-severity vulnerability in Citrix Xenserver, published on 23 Jan 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode.
Weakness: CWE-264
Which versions are affected by CVE-2016-9382?
It affects 2 products.
Products include Citrix Xenserver, Xen Xen.
How do I fix CVE-2016-9382?
Apply the vendor's patch.
Is CVE-2016-9382 being exploited?
There is no known exploitation of CVE-2016-9382 in the wild and no public exploit code.
Other vulnerabilities in Citrix Xenserver
Sources
Also known as ALPINE-CVE-2016-9382, DEBIAN-CVE-2016-9382, GHSA-6gg6-vw3j-g8pq, UBUNTU-CVE-2016-9382.