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CVE-2021-20274

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 before 3.0.32 存在安全漏洞，该漏洞源于socks服务器行为不当时，空指针解引用可能会导致崩溃。

AI Predicted 5.3 Difficulty: Easy EPSS 1.92% · P78

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-20274

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in privoxy before 3.0.32. A crash may occur due a NULL-pointer dereference when the socks server misbehaves.
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 before 3.0.32 存在安全漏洞，该漏洞源于socks服务器行为不当时，空指针解引用可能会导致崩溃。
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 3.0.32 -

II. Public POCs for CVE-2021-20274

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-20274

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Vendor Advisories for CVE-2021-20274 (2)

Other References for CVE-2021-20274 (1)

Same Patch Batch · n/a · 2021-03-09 · 29 CVEs total

CVE-2021-23352 8.6 HIGH Command Injection
CVE-2021-23353 5.9 MEDIUM Regular Expression Denial of Service (ReDoS)
CVE-2021-28116 3.7 LOW Squid 缓冲区错误漏洞
CVE-2021-20246 ImageMagick Studio ImageMagick 数字错误漏洞
CVE-2021-28119 Xander Frangos twinkle-tray 安全漏洞
CVE-2021-20245 ImageMagick Studio ImageMagick 数字错误漏洞
CVE-2021-20244 ImageMagick Studio ImageMagick 数字错误漏洞
CVE-2021-20243 ImageMagick Studio ImageMagick 数字错误漏洞
CVE-2021-20241 ImageMagick Studio ImageMagick 数字错误漏洞
CVE-2021-28006 Sourcecodester Web Based Quiz System 跨站脚本漏洞
CVE-2021-20272 Privoxy 安全漏洞
CVE-2021-20273 Privoxy 输入验证错误漏洞
CVE-2021-20275 Privoxy 缓冲区错误漏洞
CVE-2021-20276 Privoxy 缓冲区错误漏洞
CVE-2021-25915 Eugene Ware changeset 安全漏洞
CVE-2021-20253 Red Hat ansible-tower 安全漏洞
CVE-2021-20268 Linux kernel 输入验证错误漏洞
CVE-2021-20263 QEMU 安全漏洞
CVE-2021-20262 Red Hat Keycloak 访问控制错误漏洞
CVE-2020-28150 I-Net Software Clear Reports 输入验证错误漏洞

Showing top 20 of 29 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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

V. Comments for CVE-2021-20274

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