CVE-2021-42375
Quick assessment
Affected
busybox busybox
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.
BusyBox是乌克兰Denis Vlasenko个人开发者的一套包含了多个linux命令和工具的应用程序。 Busybox 中存在安全漏洞，该漏洞源于产品未对输入的shell命令做安全处理。攻击者可通过该漏洞导致拒绝服务。 以下产品及版本受到影响：Busybox 1.33.1 版本。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-42375
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An incorrect handling of a special element in Busybox's ash applet leads to denial of service when processing a crafted shell command, due to the shell mistaking specific characters for reserved characters. This may be used for DoS under rare conditions of filtered command input.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
特殊元素净化处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
BusyBox 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
BusyBox是乌克兰Denis Vlasenko个人开发者的一套包含了多个linux命令和工具的应用程序。 Busybox 中存在安全漏洞，该漏洞源于产品未对输入的shell命令做安全处理。攻击者可通过该漏洞导致拒绝服务。 以下产品及版本受到影响：Busybox 1.33.1 版本。
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
II. Public POCs for CVE-2021-42375
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2021-42375 (1)
Mailing List Discussions for CVE-2021-42375 (1)
Security Blog Posts for CVE-2021-42375 (1)
Other References for CVE-2021-42375 (1)
Same Patch Batch · busybox · 2021-11-15 · 14 CVEs total
| CVE-2021-42386 | BusyBox 资源管理错误漏洞 | |
| CVE-2021-42385 | BusyBox 资源管理错误漏洞 | |
| CVE-2021-42384 | BusyBox 资源管理错误漏洞 | |
| CVE-2021-42383 | BusyBox 资源管理错误漏洞 | |
| CVE-2021-42382 | BusyBox 资源管理错误漏洞 | |
| CVE-2021-42381 | BusyBox 资源管理错误漏洞 | |
| CVE-2021-42380 | BusyBox 资源管理错误漏洞 | |
| CVE-2021-42379 | BusyBox 资源管理错误漏洞 | |
| CVE-2021-42378 | BusyBox 资源管理错误漏洞 | |
| CVE-2021-42377 | Busybox 安全漏洞 | |
| CVE-2021-42376 | BusyBox 代码问题漏洞 | |
| CVE-2021-42374 | BusyBox 缓冲区错误漏洞 | |
| CVE-2021-42373 | BusyBox 代码问题漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-42375
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