CVE-2018-19962 Privilege escalation in n/a
Guest OS users can gain host OS privileges on AMD x86 platforms due to unsafe IOMMU mapping combinations in Xen.
- 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-2018-19962?
CVE-2018-19962 is a high-severity vulnerability in Citrix Xenserver, published on 8 Dec 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because small IOMMU mappings are unsafely combined into larger ones.
Weakness: CWE-200
Which versions are affected by CVE-2018-19962?
It affects 3 products.
Products include Citrix Xenserver, Debian Debian Linux, Xen Xen.
How do I fix CVE-2018-19962?
Apply the vendor's patch.
Is CVE-2018-19962 being exploited?
There is no known exploitation of CVE-2018-19962 in the wild and no public exploit code.
Other vulnerabilities in Citrix Xenserver
Sources
Also known as ALPINE-CVE-2018-19962, DEBIAN-CVE-2018-19962, GHSA-2hh5-jxwx-3pwr, UBUNTU-CVE-2018-19962.