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CVE-2021-26315

Quick assessment

Affected
AMD 3rd Gen AMD EPYC™
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 存在数据伪造问题漏洞，该漏洞源于当 AMD Platform Security Processor (PSP) 启动 rom 加载、验证和随后解密加密的固件时，由于对解密映像的完整性验证不足，使用加密固件映像时，可能会在 PSP 中执行任意代码。

AI Predicted 7.2 Difficulty: Hard EPSS 0.17% · P5

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-26315

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
When the AMD Platform Security Processor (PSP) boot rom loads, authenticates, and subsequently decrypts an encrypted FW, due to insufficient verification of the integrity of decrypted image, arbitrary code may be executed in the PSP when encrypted firmware images are used.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
AMD Platform Security Processor 数据伪造问题漏洞
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 存在数据伪造问题漏洞，该漏洞源于当 AMD Platform Security Processor (PSP) 启动 rom 加载、验证和随后解密加密的固件时，由于对解密映像的完整性验证不足，使用加密固件映像时，可能会在 PSP 中执行任意代码。
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 3rd Gen AMD EPYC™ unspecified ~ MilanPI-SP3_1.0.0.4 -

II. Public POCs for CVE-2021-26315

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-26315

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Other References for CVE-2021-26315 (1)

Same Patch Batch · AMD · 2021-11-16 · 21 CVEs total

CVE-2021-26335 AMD Secure Processor 输入验证错误漏洞
CVE-2021-26337 AMD System Management Unit 输入验证错误漏洞
CVE-2021-26325 AMD 多款产品输入验证错误漏洞
CVE-2021-26330 AMD 多款产品缓冲区错误漏洞
CVE-2021-26327 Advanced Micro Devices SNP 输入验证错误漏洞
CVE-2020-12944 AMD Secure Processor输入验证错误漏洞
CVE-2021-26323 Advanced Micro Devices SNP 输入验证错误漏洞
CVE-2020-12961 AMD Platform Security Processor输入验证错误漏洞
CVE-2020-12954 AMD Platform Security Processor 安全漏洞
CVE-2021-26331 AMD多款产品输入验证错误漏洞
CVE-2021-26326 AMD 多款产品安全漏洞
CVE-2021-26321 AMD Platform Security Processor命令注入漏洞
CVE-2020-12951 AMD Platform Security Processor 竞争条件问题漏洞
CVE-2021-26320 AMD Platform Security Processor信任管理问题漏洞
CVE-2021-26336 AMD System Management Unit 缓冲区错误漏洞
CVE-2020-12946 AMD Platform Security Processor 输入验证错误漏洞
CVE-2021-26322 AMD Secure Processor 安全特征问题漏洞
CVE-2021-26329 AMD 多款产品输入验证错误漏洞
CVE-2021-26312 AMD Platform Security Processor安全漏洞
CVE-2021-26338 AMD System Management Unit 安全漏洞

IV. Related Vulnerabilities

Same product: 3rd Gen AMD EPYC™
Same vendor: AMD
Same weakness: CWE-345

V. Comments for CVE-2021-26315

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