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CVE-2021-20236

Quick assessment

Affected
n/a zeromq
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。 ZeroMQ server 4.3.3之前版本存在安全漏洞，该漏洞源于允许恶意客户端通过发送精心设计的主题订阅请求，然后取消订阅，从而导致服务器上的堆栈缓冲区溢出。

AI Predicted 7.5 Difficulty: Moderate EPSS 1.60% · P75
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I. Basic Information for CVE-2021-20236

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the ZeroMQ server in versions before 4.3.3. This flaw allows a malicious client to cause a stack buffer overflow on the server by sending crafted topic subscription requests and then unsubscribing. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
ZeroMQ 缓冲区错误漏洞
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 server 4.3.3之前版本存在安全漏洞，该漏洞源于允许恶意客户端通过发送精心设计的主题订阅请求，然后取消订阅，从而导致服务器上的堆栈缓冲区溢出。
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

Vendor Product Affected Versions CPE Subscribe
- zeromq zeromq 4.3.3 -

II. Public POCs for CVE-2021-20236

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III. Intelligence Information for CVE-2021-20236

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Vendor Advisories for CVE-2021-20236 (2)

Same Patch Batch · n/a · 2021-05-28 · 43 CVEs total

CVE-2021-33620 6.5 MEDIUM Squid 输入验证错误漏洞
CVE-2021-20195 Red Hat Keycloak 输入验证错误漏洞
CVE-2020-35506 QEMU 资源管理错误漏洞
CVE-2020-35504 QEMU 代码问题漏洞
CVE-2010-3843 Ettercap 缓冲区错误漏洞
CVE-2020-27847 Dex Idp Dex 安全漏洞
CVE-2020-25710 OpenLDAP 安全漏洞
CVE-2021-3514 389-ds-base 代码问题漏洞
CVE-2021-33587 css-what 安全漏洞
CVE-2021-33623 trim-newlines 资源管理错误漏洞
CVE-2020-25715 pki-core 跨站脚本漏洞
CVE-2020-35505 QEMU 代码问题漏洞
CVE-2021-20201 spice 安全漏洞
CVE-2021-20237 ZeroMQ 资源管理错误漏洞
CVE-2021-20239 Linux kernel 缓冲区错误漏洞
CVE-2021-20240 gdk-pixbuf 数字错误漏洞
CVE-2021-20278 Kiali 授权问题漏洞
CVE-2021-20292 Nouveau 资源管理错误漏洞
CVE-2021-27032 Autodesk Licensing Services 访问控制错误漏洞
CVE-2021-21734 ZTE PON MDU 加密问题漏洞

Showing top 20 of 43 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: zeromq
Same vendor: n/a
Same weakness: CWE-120

V. Comments for CVE-2021-20236

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