Advisory on CVE-2023-20569

Sensitive information disclosure due to speculative side-channel attack

On August 8th, 2023, Advanced Micro Devices (AMD) disclosed a vulnerability in its recent computer processor microarchitecture. This vulnerability, known as the Return Form Procedure (RET) Speculation or Inception, may allow an attacker to obtain sensitive information from a system.

If an attacker can exploit this vulnerability, they could potentially exfiltrate information contained within different security contexts such as other Virtual Machines (VM) or even the host device.

The CVE ID CVE-2023-20569 is assigned to this vulnerability and classified as a medium severity by AMD.

Impacted IONOS Cloud products

Product Ranges	Product	Impacted	Mitigated	Patch Status
Compute Services	Dedicated Core Servers	Yes	Yes	Done
Compute Services	vCPU Servers	Yes	Yes	Done
Compute Services	Cubes	Yes	In Progress	In Progress

What action has IONOS Cloud taken to mitigate the severity?

IONOS Cloud is committed to the privacy and security of our customers' data. We are aware of this vulnerability and have already initiated the required steps to mitigate this vulnerability. We are also investigating the exposure and risk of this vulnerability for our customer’s products and instances.

We will provide necessary updates as we learn more.

How can I get help?

If you have further questions or concerns about this vulnerability, contact IONOS Cloud Support.