CVE-2017-14317 Use after free in n/a
A race condition in the Xen xenstore daemon causes a double-free, leading to a denial of service for system components relying on it.
- 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-2017-14317?
CVE-2017-14317 is a medium-severity use after free vulnerability in Xen Xen, published on 12 Sep 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A domain cleanup issue was discovered in the C xenstore daemon (aka cxenstored) in Xen through 4.9.x. When shutting down a VM with a stubdomain, a race in cxenstored may cause a double-free. The xenstored daemon may crash, resulting in a DoS of any parts of the system relying on it (including domain creation / destruction, ballooning, device changes, etc.).
Weakness: CWE-362
Which versions are affected by CVE-2017-14317?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2017-14317?
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-2017-14317 being exploited?
There is no known exploitation of CVE-2017-14317 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as ALPINE-CVE-2017-14317, DEBIAN-CVE-2017-14317, GHSA-qvvj-p4wf-226j, UBUNTU-CVE-2017-14317.