CVE-2017-17563 Integer overflow in n/a

High 7.8 Published 12 Dec 2017 Updated 5 Aug 2024

Guest OS users can crash the host or gain privileges via an integer overflow in Xen's shadow mode reference counting.

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-2017-17563?

CVE-2017-17563 is a high-severity vulnerability in Xen Xen, published on 12 Dec 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 guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode.

Weakness: CWE-119

Which versions are affected by CVE-2017-17563?

It affects 1 product.

Products include Xen Xen.

How do I fix CVE-2017-17563?

Apply the vendor's patch.

Is CVE-2017-17563 being exploited?

There is no known exploitation of CVE-2017-17563 in the wild and no public exploit code.

All Xen Xen vulnerabilities

Sources

Also known as ALPINE-CVE-2017-17563, DEBIAN-CVE-2017-17563, GHSA-6mhv-9623-3chf, UBUNTU-CVE-2017-17563.