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CVE-2021-20209

Quick assessment

Affected
n/a privoxy
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.

Privoxy是美国Privoxy团队的一款不进行网页缓存且自带过滤功能的代理服务器。它具有高级过滤功能，可增强隐私，修改网页数据和HTTP标头，控制访问以及删除广告和其他令人讨厌的Internet垃圾。Privoxy具有灵活的配置，可以根据个人需要进行定制。它适用于独立系统和多用户网络。 Privoxy 存在安全漏洞，该漏洞源于当未配置任何操作文件时，show-status CGI 处理程序中发现了内存泄漏漏洞。

AI Predicted 5.3 Difficulty: Theoretical EPSS 1.90% · P79

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-20209

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A memory leak vulnerability was found in Privoxy before 3.0.29 in the show-status CGI handler when no action files are configured.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: CVE Program / CVE List V5
Vulnerability Title
Privoxy 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Privoxy是美国Privoxy团队的一款不进行网页缓存且自带过滤功能的代理服务器。它具有高级过滤功能，可增强隐私，修改网页数据和HTTP标头，控制访问以及删除广告和其他令人讨厌的Internet垃圾。Privoxy具有灵活的配置，可以根据个人需要进行定制。它适用于独立系统和多用户网络。 Privoxy 存在安全漏洞，该漏洞源于当未配置任何操作文件时，show-status CGI 处理程序中发现了内存泄漏漏洞。
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
- privoxy before 3.0.29 -

II. Public POCs for CVE-2021-20209

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III. Intelligence Information for CVE-2021-20209

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Vendor Advisories for CVE-2021-20209 (2)

Other References for CVE-2021-20209 (2)

Same Patch Batch · n/a · 2021-05-25 · 45 CVEs total

CVE-2021-30194 3S-Smart Software Solutions CODESYS V2 Web-Server 缓冲区错误漏洞
CVE-2021-30191 3S-Smart Software Solutions CODESYS V2 Web-Server 安全漏洞
CVE-2021-30192 3S-Smart Software Solutions CODESYS V2 Web-Server 安全漏洞
CVE-2021-30190 CODESYS V2 Web-Server 访问控制错误漏洞
CVE-2021-20096 OpenOversight 跨站请求伪造漏洞
CVE-2020-9452 Acronis True Image 后置链接漏洞
CVE-2020-9450 Acronis True Image 安全漏洞
CVE-2020-9451 Acronis True Image 安全漏洞
CVE-2021-33574 GNU C Library 资源管理错误漏洞
CVE-2021-30187 3S-Smart Software Solutions CODESYS Control runtime system 操作系统命令注入漏洞
CVE-2021-30193 3S-Smart Software Solutions CODESYS V2 Web-Server 缓冲区错误漏洞
CVE-2021-30186 3S-Smart Software Solutions CODESYS Control runtime system 缓冲区错误漏洞
CVE-2021-30188 3S-Smart Software Solutions CODESYS Control runtime system 缓冲区错误漏洞
CVE-2021-30195 3S-Smart Software Solutions CODESYS V2 Web-Server 缓冲区错误漏洞
CVE-2021-29201 多款Hewlett Packard Enterprise产品跨站脚本漏洞
CVE-2021-29202 多款Hewlett Packard Enterprise产品安全漏洞
CVE-2021-29204 多款Hewlett Packard Enterprise产品跨站脚本漏洞
CVE-2021-29205 多款Hewlett Packard Enterprise产品跨站脚本漏洞
CVE-2021-27821 OpenWrt LuCI 跨站脚本漏洞
CVE-2021-33425 OpenWrt LuCI Web接口跨站脚本漏洞

Showing top 20 of 45 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: privoxy
Same vendor: n/a
Same weakness: CWE-401

V. Comments for CVE-2021-20209

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