Vulnerability · Published Nov 12, 2020 · Assigned by AMD
CVE-2020-12926
Medium 6.4
In plain English
A medium-severity security flaw in AMD's fTPM implementation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Official description
The Trusted Platform Modules (TPM) reference software may not properly track the number of times a failed shutdown happens. This can leave the TPM in a state where confidential key material in the TPM may be able to be compromised. AMD believes that the attack requires physical access of the device because the power must be repeatedly turned on and off. This potential attack may be used to change confidential information, alter executables signed by key material in the TPM, or create a denial of service of the device.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | AMD's fTPM implementation | Each Linux distro determines its own version. |
Weakness: CWE-367
References
- https://www.amd.com/en/corporate/product-security x_refsource_MISC