Vulnerability Monitor

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CVE-2021-44850


On Xilinx Zynq-7000 SoC devices, physical modification of an SD boot image allows for a buffer overflow attack in the ROM. Because the Zynq-7000's boot image header is unencrypted and unauthenticated before use, an attacker can modify the boot header stored on an SD card so that a secure image appears to be unencrypted, and they will be able to modify the full range of register initialization values. Normally, these registers will be restricted when booting securely. Of importance to this attack are two registers that control the SD card's transfer type and transfer size. These registers could be modified a way that causes a buffer overflow in the ROM.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.8, with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 20 products from amd, from amd, from amd and 17 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2022-02-10T19:15:09.273

Last Modified

2024-11-21T06:31:36.447

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.8 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

3.9

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-345

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System amd xilinx_z-7012s_firmware - Yes
Hardware amd xilinx_z-7012s - No
Operating System amd xilinx_z-7014s_firmware - Yes
Hardware amd xilinx_z-7014s - No
Operating System amd xilinx_z-7010_firmware - Yes
Hardware amd xilinx_z-7010 - No
Operating System amd xilinx_z-7015_firmware - Yes
Hardware amd xilinx_z-7015 - No
Operating System amd xilinx_z-7020_firmware - Yes
Hardware amd xilinx_z-7020 - No
Operating System amd xilinx_z-7030_firmware - Yes
Hardware amd xilinx_z-7030 - No
Operating System amd xilinx_z-7035_firmware - Yes
Hardware amd xilinx_z-7035 - No
Operating System amd xilinx_z-7045_firmware - Yes
Hardware amd xilinx_z-7045 - No
Operating System amd xilinx_z-7100_firmware - Yes
Hardware amd xilinx_z-7100 - No
Operating System amd xilinx_z-7007s_firmware - Yes
Hardware amd xilinx_z-7007s - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For amd's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.