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[email protected]CVE-2021-26353

HistoryMay 10, 2022 - 7:15 p.m.

CVE-2021-26353

2022-05-1019:15:08

CWE-665

[email protected]

web.nvd.nist.gov

cve-2021-26353

validation

smm

drtm uapp

mishandled errors

memory integrity

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

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

7.7 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.8%

JSON

Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRTM UApp in a partially initialized state potentially resulting in loss of memory integrity.

Affected configurations

NVD

Node

amdepyc_7763_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7763Match-

Node

amdepyc_7713p_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7713pMatch-

Node

amdepyc_7713_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7713Match-

Node

amdepyc_7663_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7663Match-

Node

amdepyc_7643_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7643Match-

Node

amdepyc_75f3_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_75f3Match-

Node

amdepyc_7543p_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7543pMatch-

Node

amdepyc_7543_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7543Match-

Node

amdepyc_7513_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7513Match-

Node

amdepyc_7453_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7453Match-

Node

amdepyc_74f3_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_74f3Match-

Node

amdepyc_7443p_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7443pMatch-

Node

amdepyc_7443_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7443Match-

Node

amdepyc_7413_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7413Match-

Node

amdepyc_73f3_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_73f3Match-

Node

amdepyc_7343_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7343Match-

Node

amdepyc_7313p_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7313pMatch-

Node

amdepyc_7313_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7313Match-

Node

amdepyc_72f3_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_72f3Match-

Node

amdepyc_7773x_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7773xMatch-

Node

amdepyc_7473x_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7473xMatch-

Node

amdepyc_7573x_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7573xMatch-

Node

amdepyc_7373x_firmwareRange<milanpi-sp3_1.0.0.4

AND

amdepyc_7373xMatch-

CPENameOperatorVersion
amd:epyc_7763_firmwareamd epyc 7763 firmwareltmilanpi-sp3_1.0.0.4

CPE	Name	Operator	Version
amd:epyc_7763_firmware	amd epyc 7763 firmware	lt	milanpi-sp3_1.0.0.4

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "packageName": "AGESA",
    "platforms": [
      "x86"
    ],
    "product": "3rd Gen EPYC",
    "vendor": "AMD",
    "versions": [
      {
        "status": "affected",
        "version": "various "
      }
    ]
  }
]

References

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

Social References

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

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

7.7 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.8%

JSON

Related for CVE-2021-26353

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