CVE-2019-11043

0th3rs Security Team

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In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11

Tested under PHP 7.2.20/7.3.10

Instructions

1、较为稳定,只要爆破出query长度和Header头字段长度
2、auto_session检测漏洞存在性
3、实现判断目标worker进程数实现健壮性
4、全worker进程污染

Nginx configuration

location ~ [^/]\.php(/|$) {
    fastcgi_split_path_info ^(.+?\.php)(/.*)$;
    include fastcgi_params;

    fastcgi_param   PATH_INFO       $fastcgi_path_info;
    fastcgi_param SCRIPT_FILENAME   $document_root$fastcgi_script_name;
    fastcgi_param PATH_TRANSLATED   $document_root$fastcgi_path_info;
    fastcgi_pass 127.0.0.1:9000;

Usage:

python cve_2019_11043.py -u http://xxxx/index.php