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AMDCVE-2020-12890

HistoryDec 10, 2021 - 10:15 p.m.

CVE-2020-12890

2021-12-1022:15:07

AMD

web.nvd.nist.gov

cve-2020-12890

smm

amd

agesa

privilege escalation

arbitrary code execution

nvd

CVSS2

7.2

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

CVSS3

6.7

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

6.7

Confidence

High

EPSS

Percentile

12.6%

JSON

Improper handling of pointers in the System Management Mode (SMM) handling code may allow for a privileged attacker with physical or administrative access to potentially manipulate the AMD Generic Encapsulated Software Architecture (AGESA) to execute arbitrary code undetected by the operating system.

Affected configurations

Nvd

Node

amdamd_generic_encapsulated_software_architectureMatch-

VendorProductVersionCPE
amdamd_generic_encapsulated_software_architecture-cpe:2.3:o:amd:amd_generic_encapsulated_software_architecture:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
amd	amd_generic_encapsulated_software_architecture	-	cpe:2.3:o:amd:amd_generic_encapsulated_software_architecture:-:::::::*

CNA Affected

[
  {
    "product": "AMD Processors",
    "vendor": "AMD",
    "versions": [
      {
        "status": "unaffected",
        "version": "Processor  EPYC"
      }
    ]
  }
]

References

www.amd.com/en/corporate/product-security

CVSS2

7.2

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

CVSS3

6.7

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

6.7

Confidence

High

EPSS

Percentile

12.6%

JSON

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