CVE-2021-26408
Quick assessment
Affected
AMD 1st 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 Secure Encrypted Virtualization是美国AMD公司的一个应用软件。硬件加速的内存加密，以保护使用中的数据。 AMD SEV-legacy 固件存在安全漏洞。攻击者利用该漏洞导致客户机的完整性或机密性丢失。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-26408
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potentially resulting in loss of guest's integrity or confidentiality.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
AMD SEV-legacy 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMD Secure Encrypted Virtualization是美国AMD公司的一个应用软件。硬件加速的内存加密，以保护使用中的数据。 AMD SEV-legacy 固件存在安全漏洞。攻击者利用该漏洞导致客户机的完整性或机密性丢失。
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 | 1st Gen AMD EPYC™ | unspecified ~ NaplesPI-SP3_1.0.0.G | - |
|
| AMD | 2nd Gen AMD EPYC™ | unspecified ~ RomePI-SP3_1.0.0.C | - |
|
II. Public POCs for CVE-2021-26408
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-26408 (1)
Same Patch Batch · AMD · 2022-05-10 · 8 CVEs total
| CVE-2021-26353 | AMD EPYC DRTM UApp 安全漏洞 | |
| CVE-2021-46771 | AMD Secure Processor 安全漏洞 | |
| CVE-2021-26324 | AMD EPYC SEV-ES TMR 安全漏洞 | |
| CVE-2021-26332 | AMD Secure Encrypted Virtualization 安全漏洞 | |
| CVE-2021-26352 | AMD System Management Unit 缓冲区错误漏洞 | |
| CVE-2021-26370 | AMD EPYC UApp/ABL 输入验证错误漏洞 | |
| CVE-2021-26390 | AMD EPYC 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-26408
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