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I. Basic Information for CVE-2021-3420
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in newlib in versions prior to 4.0.0. Improper overflow validation in the memory allocation functions mEMALIGn, pvALLOc, nano_memalign, nano_valloc, nano_pvalloc could case an integer overflow, leading to an allocation of a small buffer and then to a heap-based buffer overflow.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Vulnerability Title
Red Hat newlib libc 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat newlib libc是美国红帽(Red Hat)公司的一款主要用于嵌入式系统的C语言库。 newlib in versions prior to 4.0.0 存在安全漏洞,该漏洞源于内存分配函数mEMALIGn, pvALLOc, nano_memalign, nano_valloc, nano_pvalloc不当的溢出验证可能导致整数溢出,导致分配一个小缓冲区,然后导致基于堆的缓冲区溢出。
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
VendorProductAffected VersionsCPESubscribe
-newlib newlib versions prior to 4.0.0 -
II. Public POCs for CVE-2021-3420
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III. Intelligence Information for CVE-2021-3420
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IV. Related Vulnerabilities
V. Comments for CVE-2021-3420

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