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AMDCVE-2021-26333

HistorySep 21, 2021 - 11:15 a.m.

CVE-2021-26333

2021-09-2111:15:07

CWE-909

CWE-200

AMD

web.nvd.nist.gov

amd

platform security processor

psp

chipset

driver

vulnerability

information disclosure

dacl

nvd

data leak

uninitialized physical pages

CVSS2

4.9

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

4.9

Confidence

High

EPSS

0.001

Percentile

17.2%

JSON

An information disclosure vulnerability exists in AMD Platform Security Processor (PSP) chipset driver. The discretionary access control list (DACL) may allow low privileged users to open a handle and send requests to the driver resulting in a potential data leak from uninitialized physical pages.

Affected configurations

Nvd

Node

amdchipset_driverRange<3.08.17.735

amdpsp_driverRange<5.17.0.0

VendorProductVersionCPE
amdchipset_driver*cpe:2.3:a:amd:chipset_driver:*:*:*:*:*:*:*:*
amdpsp_driver*cpe:2.3:a:amd:psp_driver:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
amd	chipset_driver	*	cpe:2.3:a:amd:chipset_driver::::::::
amd	psp_driver	*	cpe:2.3:a:amd:psp_driver::::::::

CNA Affected

[
  {
    "product": "PSP Driver",
    "vendor": "AMD",
    "versions": [
      {
        "lessThan": "5.17.0.0",
        "status": "affected",
        "version": "PSP Driver",
        "versionType": "custom"
      }
    ]
  }
]

References

packetstormsecurity.com/files/164202/AMD-Chipset-Driver-Information-Disclosure-Memory-Leak.html

seclists.org/fulldisclosure/2021/Sep/24

www.amd.com/en/corporate/product-security/bulletin/amd-sb-1009

CVSS2

4.9

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

4.9

Confidence

High

EPSS

0.001

Percentile

17.2%

JSON

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