CVE-2021-46757: Buffer Overflow

Published Feb 13, 2024
·
Updated

Insufficient checking of memory buffer in ASP Secure OS may allow an attacker with a malicious TA to read/write to the ASP Secure OS kernel virtual address space potentially leading to privilege escalation.

Affected Software

20 affected components
All of the following
AMD Ryzen Embedded 5950e Firmware<embam4pi_1.0.0.0
AMD Ryzen Embedded 5950e
All of the following
AMD Ryzen Embedded 5900e Firmware<embam4pi_1.0.0.0
AMD Ryzen Embedded 5900e
All of the following
AMD Ryzen Embedded 5800e Firmware<embam4pi_1.0.0.0
AMD Ryzen Embedded 5800e
All of the following
AMD Ryzen Embedded 5600e Firmware<embam4pi_1.0.0.0
AMD Ryzen Embedded 5600e
All of the following
AMD Ryzen Embedded V2516 Firmware<embeddedpi-fp6_1.0.0.6
AMD Ryzen Embedded V2516
All of the following
AMD Ryzen Embedded V2546 Firmware<embeddedpi-fp6_1.0.0.6
AMD Ryzen Embedded V2546
All of the following
AMD Ryzen Embedded V2718 Firmware<embeddedpi-fp6_1.0.0.6
AMD Ryzen Embedded V2718
All of the following
AMD Ryzen Embedded V2748 Firmware<embeddedpi-fp6_1.0.0.6
AMD Ryzen Embedded V2748
All of the following
AMD Ryzen Embedded R2312 Firmware<embeddedpi-fp6_1.0.0.6
AMD Ryzen Embedded R2312
All of the following
AMD Ryzen Embedded R2314 Firmware<embeddedpi-fp6_1.0.0.6
AMD Ryzen Embedded R2314

Event History

Feb 13, 2024
CVE Published
via MITRE·07:23 PM
Data Sourced
via MITRE·07:23 PM
Description
Data Sourced
via NVD·08:15 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2021-46757?

CVE-2021-46757 has a medium severity rating due to potential privilege escalation risks.

2

How do I fix CVE-2021-46757?

To fix CVE-2021-46757, update the firmware of the affected AMD Ryzen Embedded products to the latest version that addresses the vulnerability.

3

What systems are affected by CVE-2021-46757?

CVE-2021-46757 affects several AMD Ryzen Embedded firmware versions, including those for 5950E, 5900E, 5800E, and other Ryzen Embedded models.

4

What could an attacker achieve by exploiting CVE-2021-46757?

An attacker exploiting CVE-2021-46757 could read or write to the ASP Secure OS kernel virtual address space, potentially allowing privilege escalation.

5

Is there a patch available for CVE-2021-46757?

Yes, AMD has released a patch for CVE-2021-46757 in the latest firmware updates for affected products.

Contact

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