CVE-2021-26361
Quick assessment
Affected
AMD Ryzen™ Series
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 System Management Unit（SMU）是美国AMD公司的一个系统管理单元。 AMD System Management Unit 中存在安全漏洞，该漏洞源于使用恶意或受损的用户应用程序（UApp）或AGESA引导加载程序（ABL）从ASP stage 2引导加载程序中过滤任意内存，从而导致信息泄露。
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I. Basic Information for CVE-2021-26361
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A malicious or compromised User Application (UApp) or AGESA Boot Loader (ABL) could be used by an attacker to exfiltrate arbitrary memory from the ASP stage 2 bootloader potentially leading to information disclosure.
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 System Management Unit 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMD System Management Unit（SMU）是美国AMD公司的一个系统管理单元。 AMD System Management Unit 中存在安全漏洞，该漏洞源于使用恶意或受损的用户应用程序（UApp）或AGESA引导加载程序（ABL）从ASP stage 2引导加载程序中过滤任意内存，从而导致信息泄露。
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 | Ryzen™ Series | various | - |
|
| AMD | Athlon™ Series | various | - |
|
II. Public POCs for CVE-2021-26361
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-26361 (1)
Same Patch Batch · AMD · 2022-05-12 · 9 CVEs total
| CVE-2021-26363 | AMD System Management Unit 权限许可和访问控制问题漏洞 | |
| CVE-2021-26386 | AMD System Management Unit 缓冲区错误漏洞 | |
| CVE-2021-26317 | AMD System Management Mode 数据伪造问题漏洞 | |
| CVE-2021-26368 | AMD Processors 数据伪造问题漏洞 | |
| CVE-2021-26362 | AMD System Management Unit 输入验证错误漏洞 | |
| CVE-2021-26351 | AMD System Management Unit 输入验证错误漏洞 | |
| CVE-2021-26366 | AMD System Management Unit 权限许可和访问控制问题漏洞 | |
| CVE-2021-26369 | AMD System Management Unit 缓冲区错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-26361
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