CVE-2017-12136 Race condition in n/a
Local guest administrators can exploit a race condition in Xen to crash the host or escalate privileges to the host level.
- 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-2017-12136?
CVE-2017-12136 is a high-severity vulnerability in Citrix Xenserver, published on 24 Aug 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Race condition in the grant table code in Xen 4.6.x through 4.9.x allows local guest OS administrators to cause a denial of service (free list corruption and host crash) or gain privileges on the host via vectors involving maptrack free list handling.
Weakness: CWE-362
Which versions are affected by CVE-2017-12136?
It affects 3 products.
Products include Citrix Xenserver, Debian Debian Linux, Xen Xen.
How do I fix CVE-2017-12136?
Apply the vendor's patch.
Is CVE-2017-12136 being exploited?
There is no known exploitation of CVE-2017-12136 in the wild and no public exploit code.
Other vulnerabilities in Citrix Xenserver
Sources
Also known as ALPINE-CVE-2017-12136, DEBIAN-CVE-2017-12136, GHSA-9r53-65fp-9gr6, UBUNTU-CVE-2017-12136.