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I. Basic Information for CVE-2021-3520
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
There's a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove() on a negative size argument, causing an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability, with some potential impact to confidentiality and integrity as well.
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
LZ4 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LZ4是一款无损压缩算法。 LZ4 1:1.9.3-1 存在输入验证错误漏洞,该漏洞源于整数溢出bug导致一个memmove参数变为负数而导致的潜在内存损坏。
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
-lz4 lz4-1.8.3 -
II. Public POCs for CVE-2021-3520
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III. Intelligence Information for CVE-2021-3520
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IV. Related Vulnerabilities
V. Comments for CVE-2021-3520

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