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CVE-2021-20213

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 存在代码问题漏洞，该漏洞源于Privoxy无法从主机报头获取请求目的地，并且内存分配失败，则防止可能导致崩溃的空指针解引用。

AI Predicted 5.3 Difficulty: Moderate EPSS 1.57% · P75

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-20213

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Privoxy in versions before 3.0.29. Dereference of a NULL-pointer that could result in a crash if accept-intercepted-requests was enabled, Privoxy failed to get the request destination from the Host header and a memory allocation failed.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Privoxy 代码问题漏洞
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 存在代码问题漏洞，该漏洞源于Privoxy无法从主机报头获取请求目的地，并且内存分配失败，则防止可能导致崩溃的空指针解引用。
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 Privoxy 3.0.29 -

II. Public POCs for CVE-2021-20213

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III. Intelligence Information for CVE-2021-20213

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Vendor Advisories for CVE-2021-20213 (2)

Other References for CVE-2021-20213 (1)

Same Patch Batch · n/a · 2021-03-25 · 43 CVEs total

CVE-2021-3443 JasPer 代码问题漏洞
CVE-2021-20215 Privoxy 安全漏洞
CVE-2021-27193 Netop Vision 访问控制错误漏洞
CVE-2021-27194 Netop Vision 安全漏洞
CVE-2021-27192 Netop Vision 安全漏洞
CVE-2021-22496 Micro Focus Access Manager Appliance 授权问题漏洞
CVE-2021-29156 Forgerock ForgeRock OpenAM 注入漏洞
CVE-2021-26715 Michael Stepankin OpenID-Connect-Java-Spring-Server 代码问题漏洞
CVE-2021-3466 libmicrohttpd 缓冲区错误漏洞
CVE-2021-22659 Rockwell Automation MicroLogix 1400 安全漏洞
CVE-2021-27195 Netop Vision 安全漏洞
CVE-2021-3446 Arch Linux libtpms 安全特征问题漏洞
CVE-2021-3467 JasPer 代码问题漏洞
CVE-2021-26597 NOKIA NetAct 18A 代码问题漏洞
CVE-2021-26596 NOKIA NetAct 18A 跨站脚本漏洞
CVE-2020-35502 Privoxy 安全漏洞
CVE-2021-20210 Privoxy 安全漏洞
CVE-2021-20211 Privoxy 安全漏洞
CVE-2021-20212 Privoxy 安全漏洞
CVE-2021-20214 Privoxy 安全漏洞

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

IV. Related Vulnerabilities

Same product: privoxy
Same vendor: n/a
Same weakness: CWE-476

V. Comments for CVE-2021-20213

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