CVE-2021-44540
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存在输入验证错误漏洞，该漏洞源于“get_url_spec_param”函数中用户提供的输入验证不足。攻击者可利用该漏洞将精心编制的输入传递给应用程序并执行拒绝服务（DoS）攻击。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-44540
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled pattern spec before bailing.
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 输入验证错误漏洞
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存在输入验证错误漏洞，该漏洞源于“get_url_spec_param”函数中用户提供的输入验证不足。攻击者可利用该漏洞将精心编制的输入传递给应用程序并执行拒绝服务（DoS）攻击。
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 3.0.33 | - |
|
II. Public POCs for CVE-2021-44540
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2021-44540 (2)
-
https://www.privoxy.org/3.0.33/user-manual/whatsnew.html%2C x_refsource_MISC
Same Patch Batch · n/a · 2021-12-23 · 22 CVEs total
| CVE-2021-45462 | 7.5 HIGH | Open5Gs 输入验证错误漏洞 |
| CVE-2021-20318 | Red Hat Jboss Enterprise Application Platform 7 代码问题漏洞 | |
| CVE-2020-35398 | Nch Software UTI Mutual fund 安全漏洞 | |
| CVE-2021-45470 | cve-search 安全漏洞 | |
| CVE-2021-3622 | hivex 资源管理错误漏洞 | |
| CVE-2021-27006 | Netapp StorageGRID 安全漏洞 | |
| CVE-2021-3584 | Foreman 操作系统命令注入漏洞 | |
| CVE-2021-27007 | NetApp Virtual Desktop Service 安全漏洞 | |
| CVE-2021-4024 | Podman 访问控制错误漏洞 | |
| CVE-2021-44543 | Privoxy 跨站脚本漏洞 | |
| CVE-2021-44542 | Privoxy 输入验证错误漏洞 | |
| CVE-2021-44541 | Privoxy 输入验证错误漏洞 | |
| CVE-2021-3621 | SSSD 操作系统命令注入漏洞 | |
| CVE-2021-45469 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2021-40161 | Autodesk Navisworks 缓冲区错误漏洞 | |
| CVE-2021-40160 | Autodesk Navisworks 缓冲区错误漏洞 | |
| CVE-2021-44526 | Zoho ManageEngine SupportCenter Plus 授权问题漏洞 | |
| CVE-2021-44600 | Simple Online Mens Salon Management SystemSQL注入漏洞 | |
| CVE-2021-44599 | Online Enrollment Management System SQL注入漏洞 | |
| CVE-2021-45463 | GIMP 操作系统命令注入漏洞 |
Showing top 20 of 22 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-44540
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