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CVE-2021-23409— Denial of Service (DoS)

Quick assessment

Affected
n/a github.com/pires/go-proxyproto
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.

Pires go-proxyproto是 （Pires）开源的一个应用软件。提供一种安全的方式，可以跨NAT或TCP代理的多层安全地传输连接信息功能。 go-proxyproto 中存在处理逻辑错误漏洞，该漏洞源于产品在没有代理协议头的情况下创建连接，攻击者可通过该漏洞导致拒绝服务。以下产品及版本受到影响：go-proxyproto 0.6.0 之前版本。

CVSS 7.5 · High EPSS 1.65% · P74

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-23409

Vulnerability Information
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Vulnerability Title
Denial of Service (DoS)
Source: CVE Program / CVE List V5
Vulnerability Description
The package github.com/pires/go-proxyproto before 0.6.0 are vulnerable to Denial of Service (DoS) via creating connections without the proxy protocol header.
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
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
go-proxyproto 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pires go-proxyproto是 （Pires）开源的一个应用软件。提供一种安全的方式，可以跨NAT或TCP代理的多层安全地传输连接信息功能。 go-proxyproto 中存在处理逻辑错误漏洞，该漏洞源于产品在没有代理协议头的情况下创建连接，攻击者可通过该漏洞导致拒绝服务。以下产品及版本受到影响：go-proxyproto 0.6.0 之前版本。
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
- github.com/pires/go-proxyproto unspecified ~ 0.6.0 -

II. Public POCs for CVE-2021-23409

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III. Intelligence Information for CVE-2021-23409

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Patches & Fixes for CVE-2021-23409 (2)

Vendor Advisories for CVE-2021-23409 (1)

Other References for CVE-2021-23409 (2)

Same Patch Batch · n/a · 2021-07-21 · 67 CVEs total

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CVE-2020-19467 Modesty Pdf2json 资源管理错误漏洞
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CVE-2020-20221 MikroTik RouterOS 资源管理错误漏洞
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CVE-2020-20262 MikroTik RouterOS 代码问题漏洞

Showing top 20 of 67 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: github.com/pires/go-proxyproto
Same vendor: n/a

V. Comments for CVE-2021-23409

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