CVE-2017-17045 Use after free in n/a
Guest OS users can escalate privileges to the host, leak information, or crash the host via mishandled Populate on Demand errors.
- 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-2017-17045?
CVE-2017-17045 is a high-severity use after free vulnerability in Xen Xen, published on 28 Nov 2017. 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 4.9.x allowing HVM guest OS users to gain privileges on the host OS, obtain sensitive information, or cause a denial of service (BUG and host OS crash) by leveraging the mishandling of Populate on Demand (PoD) Physical-to-Machine (P2M) errors.
Weakness: CWE-416
Which versions are affected by CVE-2017-17045?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2017-17045?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2017-17045 being exploited?
There is no known exploitation of CVE-2017-17045 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as ALPINE-CVE-2017-17045, DEBIAN-CVE-2017-17045, GHSA-33cr-5mgj-3gg9, UBUNTU-CVE-2017-17045.