CVE-2021-27431— ARM CMSIS RTOS2 Integer Overflow or Wraparound
Quick assessment
Affected
ARM CMSIS RTOS2
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.
ARM CMSIS-RTOS是英国ARM公司的一个应用软件。用于创建同时执行多项任务的应用程序。 ARM CMSIS-RTOS versions prior to 2.1.3 存在输入验证错误漏洞，该漏洞源于不正确的内存分配可能导致任意的内存分配，从而导致意外的行为，如崩溃或远程代码注入执行。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-27431
Vulnerability Information
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Vulnerability Title
ARM CMSIS RTOS2 Integer Overflow or Wraparound
Source: CVE Program / CVE List V5
Vulnerability Description
ARM CMSIS RTOS2 versions prior to 2.1.3 are vulnerable to integer wrap-around inosRtxMemoryAlloc (local malloc equivalent) function, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or injected code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
ARM CMSIS-RTOS 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ARM CMSIS-RTOS是英国ARM公司的一个应用软件。用于创建同时执行多项任务的应用程序。 ARM CMSIS-RTOS versions prior to 2.1.3 存在输入验证错误漏洞，该漏洞源于不正确的内存分配可能导致任意的内存分配，从而导致意外的行为，如崩溃或远程代码注入执行。
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 |
|---|---|---|---|---|
| ARM | CMSIS RTOS2 | unspecified ~ 2.1.3 | - |
|
II. Public POCs for CVE-2021-27431
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-27431 (1)
-
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 x_refsource_CONFIRM
Same Patch Batch · ARM · 2022-05-03 · 3 CVEs total
| CVE-2021-27433 | 7.3 HIGH | ARM mbed-ualloc memory library Integer Overflow or Wraparound |
| CVE-2021-27435 | 7.3 HIGH | ARM mbed Integer Overflow or Wraparound |
IV. Related Vulnerabilities
V. Comments for CVE-2021-27431
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