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CVE-2021-42374

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 unlzma applet 存在缓冲区错误漏洞，该漏洞源于Busybox的unlzma applet中的越界堆读取会导致信息泄漏和在解压缩lzma压缩输入时拒绝服务。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.62% · P48
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I. Basic Information for CVE-2021-42374

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An out-of-bounds heap read in Busybox's unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
BusyBox 缓冲区错误漏洞
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 unlzma applet 存在缓冲区错误漏洞，该漏洞源于Busybox的unlzma applet中的越界堆读取会导致信息泄漏和在解压缩lzma压缩输入时拒绝服务。
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
busybox busybox unspecified ~ 1.34.0 -

II. Public POCs for CVE-2021-42374

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III. Intelligence Information for CVE-2021-42374

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Vendor Advisories for CVE-2021-42374 (1)

Mailing List Discussions for CVE-2021-42374 (1)

Security Blog Posts for CVE-2021-42374 (1)

Other References for CVE-2021-42374 (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-2021-42375 BusyBox 安全漏洞
CVE-2021-42373 BusyBox 代码问题漏洞

IV. Related Vulnerabilities

Same product: busybox
Same vendor: busybox
Same weakness: CWE-125

V. Comments for CVE-2021-42374

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