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[email protected]CVE-2021-26316

HistoryJan 11, 2023 - 8:15 a.m.

CVE-2021-26316

2023-01-1108:15:10

CWE-20

[email protected]

web.nvd.nist.gov

cve-2021-26316

bios

communication buffer

arbitrary code execution

smm

nvd

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

4.3 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.3%

JSON

Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) arbitrary code execution.

CPENameOperatorVersion
amd:epyc_7h12_firmwareamd epyc 7h12 firmwareltromepi_1.0.0.d
amd:epyc_7h12_firmwareamd epyc 7h12 firmwareeqromepi_1.0.0.a
amd:epyc_7h12_firmwareamd epyc 7h12 firmwareeqromepi_1.0.0.c
amd:epyc_7h12_firmwareamd epyc 7h12 firmwareeqromepi-sp3_1.0.0.c
amd:epyc_7h12_firmwareamd epyc 7h12 firmwareeq-
amd:epyc_7h12_firmwareamd epyc 7h12 firmwareeqromepi-sp3_1.0.0.d

CPE	Name	Operator	Version
amd:epyc_7h12_firmware	amd epyc 7h12 firmware	lt	romepi_1.0.0.d
amd:epyc_7h12_firmware	amd epyc 7h12 firmware	eq	romepi_1.0.0.a
amd:epyc_7h12_firmware	amd epyc 7h12 firmware	eq	romepi_1.0.0.c
amd:epyc_7h12_firmware	amd epyc 7h12 firmware	eq	romepi-sp3_1.0.0.c
amd:epyc_7h12_firmware	amd epyc 7h12 firmware	eq	-
amd:epyc_7h12_firmware	amd epyc 7h12 firmware	eq	romepi-sp3_1.0.0.d

References

www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031

www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

4.3 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.3%

JSON

Related for CVE-2021-26316

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