CVE-2023-20558 Privilege escalation in Ryzen™ Threadripper™ PRO Processor
A privileged attacker can tamper with the SMM handler in AMD processors to escalate privileges, requiring firmware updates.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-20558?
CVE-2023-20558 is a high-severity vulnerability in Ryzen™ Threadripper™ PRO Processor, published on 23 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Insufficient control flow management in AmdCpmOemSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to an escalation of privileges.
Weakness: CWE-670
Which versions are affected by CVE-2023-20558?
It affects 89 products.
Products include Amd Athlon Gold 3150u Firmware, Amd Athlon Silver 3050u Firmware, Amd Ryzen 3 2200u Firmware, Amd Ryzen 3 2300u Firmware, Amd Ryzen 3 3200u Firmware, Amd Ryzen 3 3250u Firmware and 83 more.
How do I fix CVE-2023-20558?
No fix has been published for CVE-2023-20558 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-20558 being exploited?
There is no known exploitation of CVE-2023-20558 in the wild and no public exploit code.
Other vulnerabilities in Ryzen™ Threadripper™ PRO Processor
Sources
Also known as GHSA-xq4j-j5qp-3mfq.