CVE-2023-20521

Description

TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of service.

Category

3.3
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.04%
Vendor Advisory amd.com Vendor Advisory amd.com Vendor Advisory amd.com
Affected: AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso” AM4
Affected: AMD Ryzen™ Threadripper™ 2000 Series Processors “Colfax”
Affected: AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” FP5
Affected: AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”
Affected: AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics “Picasso” FP5
Affected: AMD 1st Gen AMD EPYC™ Processors
Affected: AMD 2nd Gen AMD EPYC™ Processors
Affected: AMD 3rd Gen AMD EPYC™ Processors
Affected: AMD AMD EPYC™ Embedded 3000
Affected: AMD AMD EPYC™ Embedded 7002
Affected: AMD AMD EPYC™ Embedded 7003
Affected: AMD AMD Ryzen™ Embedded R1000
Affected: AMD AMD Ryzen™ Embedded R2000
Affected: AMD AMD Ryzen™ Embedded V1000
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2023-20521?
CVE-2023-20521 has been scored as a low severity vulnerability.
How to fix CVE-2023-20521?
To fix CVE-2023-20521, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-20521 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-20521 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-20521?
CVE-2023-20521 affects AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso” AM4, AMD Ryzen™ Threadripper™ 2000 Series Processors “Colfax”, AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” FP5, AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”, AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics “Picasso” FP5, AMD 1st Gen AMD EPYC™ Processors, AMD 2nd Gen AMD EPYC™ Processors, AMD 3rd Gen AMD EPYC™ Processors, AMD AMD EPYC™ Embedded 3000, AMD AMD EPYC™ Embedded 7002, AMD AMD EPYC™ Embedded 7003, AMD AMD Ryzen™ Embedded R1000, AMD AMD Ryzen™ Embedded R2000, AMD AMD Ryzen™ Embedded V1000.
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