CVE-2020-15166— Denial of Service in ZeroMQ
Quick assessment
Affected
zeromq libzmq
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.
ZeroMQ是一个轻量级分布式消息传递引擎核心库。TCP（Transmission Control Protocol,传输控制协议）是一种面向连接的、可靠的、基于字节流的传输层通信协议，由IETF的RFC 793定义。 ZeroMQ 4.3.1-4+deb10u2 之前版本中存在安全漏洞。该漏洞源于使用libzmq库连接到应用程序的远程未经身份验证的客户端运行 ，攻击者可利用该漏洞导致服务拒绝。
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I. Basic Information for CVE-2020-15166
Vulnerability Information
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Vulnerability Title
Denial of Service in ZeroMQ
Source: CVE Program / CVE List V5
Vulnerability Description
In ZeroMQ before version 4.3.3, there is a denial-of-service vulnerability. Users with TCP transport public endpoints, even with CURVE/ZAP enabled, are impacted. If a raw TCP socket is opened and connected to an endpoint that is fully configured with CURVE/ZAP, legitimate clients will not be able to exchange any message. Handshakes complete successfully, and messages are delivered to the library, but the server application never receives them. This is patched in version 4.3.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
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。TCP（Transmission Control Protocol,传输控制协议）是一种面向连接的、可靠的、基于字节流的传输层通信协议，由IETF的RFC 793定义。 ZeroMQ 4.3.1-4+deb10u2 之前版本中存在安全漏洞。该漏洞源于使用libzmq库连接到应用程序的远程未经身份验证的客户端运行 ，攻击者可利用该漏洞导致服务拒绝。
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-2020-15166
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Patches & Fixes for CVE-2020-15166 (2)
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https://github.com/zeromq/libzmq/pull/3973 x_refsource_MISC
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https://github.com/zeromq/libzmq/pull/3913 x_refsource_MISC
Vendor Advisories for CVE-2020-15166 (2)
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https://github.com/zeromq/libzmq/security/advisories/GHSA-25wp-cf8g-938m x_refsource_CONFIRM
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Mailing List Discussions for CVE-2020-15166 (3)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YFW2ZELCCPS4VLU4OSJOH5YL6KFKTFYW/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZ5IMNQXDB52JFBXHFLK4AHVORFELNNG/ vendor-advisory x_refsource_FEDORA
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V. Comments for CVE-2020-15166
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