CVE-2021-46768
Quick assessment
Affected
AMD 2nd Gen 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是美国超威半导体（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 Secure Encrypted Virtualization (SEV)存在缓冲区错误漏洞，该漏洞源于对输入验证不足。攻击者利用该漏洞在ASP引导加载程序中执行越界内存读取，从而可能导致拒绝服务。
Possible ATT&CK Techniques 1 AI
T1498 · Network Denial of Service
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I. Basic Information for CVE-2021-46768
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service.
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 Secure Encrypted Virtualization 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMD Secure Encrypted Virtualization是美国超威半导体（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 Secure Encrypted Virtualization (SEV)存在缓冲区错误漏洞，该漏洞源于对输入验证不足。攻击者利用该漏洞在ASP引导加载程序中执行越界内存读取，从而可能导致拒绝服务。
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 | 2nd Gen EPYC | various | - |
|
| AMD | 3rd Gen EPYC | various | - |
|
II. Public POCs for CVE-2021-46768
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2021-46768 (1)
Same Patch Batch · AMD · 2023-01-10 · 14 CVEs total
| CVE-2021-26316 | AMD Athlon 输入验证错误漏洞 | |
| CVE-2021-26346 | AMD Secure Processor 输入验证错误漏洞 | |
| CVE-2021-26407 | AMD Secure Processor 安全特征问题漏洞 | |
| CVE-2021-46767 | AMD Secure Processor (ASP) 输入验证错误漏洞 | |
| CVE-2021-46795 | 多款AMD产品 安全漏洞 | |
| CVE-2022-23813 | AMD System Management Unit 缓冲区错误漏洞 | |
| CVE-2023-20522 | AMD Secure Processor(ASP) 输入验证错误漏洞 | |
| CVE-2023-20523 | AMD Secure Processor(ASP) 安全漏洞 | |
| CVE-2023-20525 | AMD Secure Processor(ASP) 输入验证错误漏洞 | |
| CVE-2023-20528 | AMD System Management Unit(SMU) 输入验证错误漏洞 | |
| CVE-2023-20529 | AMD System Management Unit(SMU) 缓冲区错误漏洞 | |
| CVE-2023-20531 | AMD System Management Unit(SMU) 缓冲区错误漏洞 | |
| CVE-2023-20532 | AMD System Management Unit(SMU) 输入验证错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-46768
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