漏洞描述 近日，爆出httpoxy漏洞，该漏洞主要存在于apache等组件中，原理是将HTTP头部的Proxy字段名变换为“HTTP_PROXY”，Value值不变，并传递给对应的CGI来执行。...官方问题版本及修复方案 1、目前REDHAT官网已经给出此漏洞的修复建议，可参考此站点对漏洞进行修复： https://access.redhat.com/security/vulnerabilities/httpoxy
什么是HTTPoxy？ 2016年7月18日，披露了一个名为HTTPoxy的CGI应用程序漏洞。...自2001年以来，HTTPoxy漏洞以某些形式出现，但直到最近才被认为是一个普遍存在的问题。虽然它可能影响许多部署，但缓解非常简单直接。...易受攻击的服务器和应用程序 HTTPoxy是许多CGI实现发现的一般漏洞。应用程序或服务器可以正确实现CGI规范，但仍然容易受到攻击。...如何打败漏洞 幸运的是，HTTPoxy修复起来相对简单。可以从Web服务器层或应用程序或库中解决该漏洞： 当应用程序或库HTTP_PROXY处于CGI环境中时，它们可以忽略该变量。...---- 参考文献：《How to Protect Your Server Against the HTTPoxy Vulnerability》
Vulnerability # https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx...Vulnerability # https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx...Vulnerability # https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx...Vulnerability # https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx...Vulnerability # https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx
pass_port; proxy_set_headerX-Forwarded-Proto $pass_access_scheme; # mitigate HTTPoxy... Vulnerability #https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx...pass_port; proxy_set_headerX-Forwarded-Proto $pass_access_scheme; # mitigate HTTPoxy... Vulnerability #https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx
测试结论 WAF部署简单方便，使用ELK分析WAF日志对于专业人员来说十分轻松，与此同时能防御多种多样的攻击，防御列表如下： SQL注入（SQLi） PHP代码注入 跨站点脚本（XSS） HTTPoxy
：阻止利用远程文件包含漏洞进行攻击 RCE：阻止利用远程命令执行漏洞进行攻击 PHP Code ：阻止PHP代码注入 HTTP Protocol Violations：阻止违反HTTP协议的恶意访问 HTTPoxy
Execution (RCE)：阻止利用远程命令执行漏洞进行攻击 PHP Code Injectiod：阻止PHP代码注入 HTTP Protocol Violations：阻止违反HTTP协议的恶意访问 HTTPoxy
content accept if HTTP monitor-uri /_______internal_router_healthz # Strip off Proxy headers to prevent HTTpoxy...(https://httpoxy.org/) http-request del-header Proxy # DNS labels are case insensitive (RFC 4343),
import_xml_minidom B409 import_xml_pulldom B410 import_lxml B411 import_xmlrpclib B412 import_httpoxy
0.9) 所以在编译阶段就会直接生成 “1” . “0.9” -> 字符串的字面量”10.9” 来源: https://www.laruence.com/2020/02/23/1990.html ◆ HTTPOXY...getenv增加了第二个参数, local_only = false, 如果这个参数为true, 则只会从系统本地的环境变量表中获取, 从而修复这个问题, 并且默认的PHP将拦截HTTP_PROXY:fix HTTPOXY
Execution (RCE)：阻止利用远程命令执行漏洞进行攻击PHP Code Injectiod：阻止PHP代码注入HTTP Protocol Violations：阻止违反HTTP协议的恶意访问HTTPoxy
passing HTTP\_PROXY environment to CGI's on this or any proxied # backend servers which have lingering "httpoxy
proxy_set_header X-Original-Forwarded-For $http_x_forwarded_for; # mitigate HTTPoxy...Vulnerability # https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx
import_xml_pulldom B410 import_lxml B411 import_xmlrpclib B412 import_httpoxy
我们可以使用一个命令安装所需的软件包： dnf -y install httpd mod_ssl mariadb-server php php-mysqlnd php-mbstring 为保证服务器不被HTTPOXY
： proxy_set_header Host $host; 正确设置 X-Forwarded-For 头的值 Rationale In the light of the latest httpoxy
云服务器
ICP备案
实时音视频
即时通信 IM
云直播
