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CVE-2021-26333— AMD Chipset Driver Information Disclosure Vulnerability

Quick assessment

Affected
AMD PSP Driver
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AMD Platform Security Processor是美国AMD公司的一款安全处理器。 AMD Platform Security Processor 存在信息泄露漏洞，该漏洞源于AMD PSP (Platform Security Processor)芯片组驱动存在信息泄露漏洞。攻击者可利用该漏洞允许低权限用户打开句柄并向驱动程序发送请求，从而导致未初始化物理页的潜在数据泄漏。

AI Predicted 4.4 Difficulty: Easy EPSS 0.52% · P42

Affected Version Matrix 1

VendorProduct Version RangeStatus
AMD PSP Driver PSP Driver< 5.17.0.0 affected
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I. Basic Information for CVE-2021-26333

Vulnerability Information
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Vulnerability Title
AMD Chipset Driver Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
AMD Platform Security Processor 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMD Platform Security Processor是美国AMD公司的一款安全处理器。 AMD Platform Security Processor 存在信息泄露漏洞，该漏洞源于AMD PSP (Platform Security Processor)芯片组驱动存在信息泄露漏洞。攻击者可利用该漏洞允许低权限用户打开句柄并向驱动程序发送请求，从而导致未初始化物理页的潜在数据泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AMD PSP Driver PSP Driver ~ 5.17.0.0 -

II. Public POCs for CVE-2021-26333

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III. Intelligence Information for CVE-2021-26333

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Exploits & Public PoCs for CVE-2021-26333 (1)

Mailing List Discussions for CVE-2021-26333 (1)

Other References for CVE-2021-26333 (1)

IV. Related Vulnerabilities

Same vendor: AMD
Same weakness: CWE-200

V. Comments for CVE-2021-26333

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