CVE-2021-46772: Out-of-bounds Read (CVSS 3.9)

Description

Insufficient input validation in the ABL may allow a privileged attacker with access to the BIOS menu or UEFI shell to tamper with the structure headers in SPI ROM causing an out of bounds memory read and write, potentially resulting in memory corruption or denial of service.

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CVSS v3.1 Score

3.9

LOW

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

CWE-787 Out-of-bounds Write

References

Other References

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3003.html https://www.amd.com/en/resources/product-security/bulletin/amd-sb-4004.html https://www.amd.com/en/resources/product-security/bulletin/amd-sb-5002.html

Frequently Asked Questions

What is CVE-2021-46772? +

Insufficient input validation in the ABL may allow a privileged attacker with access to the BIOS menu or UEFI shell to tamper with the structure headers in SPI ROM causing an out of bounds memory read and write, potentially resulting in memory corruption or denial of service. It has a CVSS v3.1 base score of 3.9 (LOW).

How severe is CVE-2021-46772? +

CVE-2021-46772 has a CVSS v3.1 score of 3.9 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

How do I check if I'm vulnerable to CVE-2021-46772? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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