CVE-2019-14556 Denial of service in Intel BIOS

What is CVE-2019-14556?

CVE-2019-14556 is a medium-severity denial of service vulnerability in Intel BIOS, published on 5 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Improper initialization in BIOS firmware for 8th, 9th, 10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 & 5000 Series Processors may allow a privileged user to potentially enable denial of service via local access.

Weakness: CWE-665

Which versions are affected by CVE-2019-14556?

It affects 1 product.

Products include Intel Bios.

How do I fix CVE-2019-14556?

No fix has been published for CVE-2019-14556 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2019-14556 being exploited?

There is no known exploitation of CVE-2019-14556 in the wild and no public exploit code.

Other vulnerabilities in Intel BIOS

• CVE-2019-14557 Memory corruption in Intel BIOS High 8.0
• CVE-2020-12360 Memory corruption in Intel(R) Processors High 7.8
• CVE-2020-8672 Memory corruption in Intel BIOS Advisory High 7.8
• CVE-2020-8739 Privilege escalation in Intel BIOS platform sample code for some Intel(R) Processors High 7.8
• CVE-2008-7096 Privilege escalation in n/a Medium 6.9

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-342r-wqp5-r3jj.