CVE-2021-45971
Quick assessment
Affected
n/a n/a
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.
Insyde InsydeH2O是中国台湾系微（Insyde）公司的一个 C 语言源，它实现了新技术“EFI/UEFI”规范，旨在取代传统的 BIOS（基本输入/输出系统）。 Insyde InsydeH2O 存在安全漏洞，该漏洞源于相关程序没有充分检查或验证分配的缓冲区指针。
Possible ATT&CK Techniques 1 AI
T1055 · Process Injection
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I. Basic Information for CVE-2021-45971
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in SdHostDriver in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer (CommBufferData).
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
Insyde InsydeH2O 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Insyde InsydeH2O是中国台湾系微（Insyde）公司的一个 C 语言源，它实现了新技术“EFI/UEFI”规范，旨在取代传统的 BIOS（基本输入/输出系统）。 Insyde InsydeH2O 存在安全漏洞，该漏洞源于相关程序没有充分检查或验证分配的缓冲区指针。
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 |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2021-45971
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-45971 (2)
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https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf x_refsource_CONFIRM
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https://security.netapp.com/advisory/ntap-20220216-0004/ x_refsource_CONFIRM
Vendor Pages for CVE-2021-45971 (1)
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Security Pledge - Insyde Software x_refsource_MISC
Same Patch Batch · n/a · 2022-01-05 · 13 CVEs total
| CVE-2020-27428 | scratch-svg-renderer 跨站脚本漏洞 | |
| CVE-2020-23986 | github-readme-stats 跨站脚本漏洞 | |
| CVE-2021-41842 | Insyde InsydeH2O 安全漏洞 | |
| CVE-2021-45969 | Insyde InsydeH2O 缓冲区错误漏洞 | |
| CVE-2021-45970 | Insyde InsydeH2O 缓冲区错误漏洞 | |
| CVE-2020-5956 | Insyde InsydeH2O 输入验证错误漏洞 | |
| CVE-2021-45833 | HDF5 缓冲区错误漏洞 | |
| CVE-2021-45832 | HDF5 缓冲区错误漏洞 | |
| CVE-2021-45830 | HDF5 缓冲区错误漏洞 | |
| CVE-2021-31589 | BeyondTrust Remote Support 跨站脚本漏洞 | |
| CVE-2021-45831 | Gpac MP4Box 代码问题漏洞 | |
| CVE-2021-46038 | GPAC 代码问题漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-45971
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