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I. Basic Information for CVE-2021-20237
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An uncontrolled resource consumption (memory leak) flaw was found in ZeroMQ's src/xpub.cpp in versions before 4.3.3. This flaw allows a remote unauthenticated attacker to send crafted PUB messages that consume excessive memory if the CURVE/ZAP authentication is disabled on the server, causing a denial of service. The highest threat from this vulnerability is to system availability.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
ZeroMQ 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZeroMQ是一个轻量级分布式消息传递引擎核心库。 ZeroMQ 存在安全漏洞,该漏洞源于一个不受控制的资源消耗缺陷。远程未经身份验证的攻击者可利用该漏洞发送消耗过多内存的精心制作的PUB消息,从而导致拒绝服务。
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
VendorProductAffected VersionsCPESubscribe
-zeromq zeromq 4.3.3 -
II. Public POCs for CVE-2021-20237
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III. Intelligence Information for CVE-2021-20237
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IV. Related Vulnerabilities
V. Comments for CVE-2021-20237

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