{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2025-23018", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2025-02-12T20:31:20.585Z", "dateReserved": "2025-01-10T00:00:00.000Z", "datePublished": "2025-01-14T00:00:00.000Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unknown", "product": "IPv6", "vendor": "IETF", "versions": [{"status": "affected", "version": "6", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "IPv4-in-IPv6 and IPv6-in-IPv6 tunneling (RFC 2473) do not require the validation or verification of the source of a network packet, allowing an attacker to spoof and route arbitrary traffic via an exposed network interface. This is a similar issue to CVE-2020-10136."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-940", "description": "CWE-940 Improper Verification of Source of a Communication Channel", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2025-01-14T19:51:42.363Z"}, "references": [{"url": "https://datatracker.ietf.org/doc/html/rfc2473"}, {"url": "https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf"}, {"url": "https://www.top10vpn.com/research/tunneling-protocol-vulnerability/"}], "x_generator": {"engine": "enrichogram 0.0.1"}, "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 5.4, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"}}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:ietf:ipv6:*:*:*:*:*:*:*:*", "versionStartIncluding": "6", "versionEndIncluding": "6"}]}]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-23018", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-01-15T19:38:35.023118Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-12T20:31:20.585Z"}}]}, "dataVersion": "5.1"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-23018", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-01-15T19:38:35.023118Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-12T20:25:59.237Z"}}], "cna": {"metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 5.4, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"}}], "affected": [{"vendor": "IETF", "product": "IPv6", "versions": [{"status": "affected", "version": "6", "versionType": "custom"}], "defaultStatus": "unknown"}], "references": [{"url": "https://datatracker.ietf.org/doc/html/rfc2473"}, {"url": "https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf"}, {"url": "https://www.top10vpn.com/research/tunneling-protocol-vulnerability/"}], "x_generator": {"engine": "enrichogram 0.0.1"}, "descriptions": [{"lang": "en", "value": "IPv4-in-IPv6 and IPv6-in-IPv6 tunneling (RFC 2473) do not require the validation or verification of the source of a network packet, allowing an attacker to spoof and route arbitrary traffic via an exposed network interface. This is a similar issue to CVE-2020-10136."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-940", "description": "CWE-940 Improper Verification of Source of a Communication Channel"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ietf:ipv6:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndIncluding": "6", "versionStartIncluding": "6"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2025-01-14T19:51:42.363Z"}}}, "cveMetadata": {"cveId": "CVE-2025-23018", "state": "PUBLISHED", "dateUpdated": "2025-02-12T20:31:20.585Z", "dateReserved": "2025-01-10T00:00:00.000Z", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "datePublished": "2025-01-14T00:00:00.000Z", "assignerShortName": "mitre"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ietf:ipv6:-:*:*:*:*:*:*:*", "matchCriteriaId": "9143AE03-F25A-4C4A-9037-DFBC9B4F5FB8", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "IPv4-in-IPv6 and IPv6-in-IPv6 tunneling (RFC 2473) do not require the validation or verification of the source of a network packet, allowing an attacker to spoof and route arbitrary traffic via an exposed network interface. This is a similar issue to CVE-2020-10136."}, {"lang": "es", "value": "La tunelizaci\u00f3n de IPv4 en IPv6 e IPv6 en IPv6 (RFC 2473) no requiere la validaci\u00f3n o verificaci\u00f3n del origen de un paquete de red, lo que permite a un atacante falsificar y enrutar tr\u00e1fico arbitrario a trav\u00e9s de una interfaz de red expuesta. Este es un problema similar a CVE-2020-10136."}], "id": "CVE-2025-23018", "lastModified": "2025-01-29T18:01:47.313", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 2.7, "source": "cve@mitre.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-01-14T20:15:32.440", "references": [{"source": "cve@mitre.org", "tags": ["Technical Description"], "url": "https://datatracker.ietf.org/doc/html/rfc2473"}, {"source": "cve@mitre.org", "tags": ["Technical Description"], "url": "https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf"}, {"source": "cve@mitre.org", "tags": ["Technical Description"], "url": "https://www.top10vpn.com/research/tunneling-protocol-vulnerability/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-940"}], "source": "cve@mitre.org", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Angelos Beitis (KU Leuven University) and Mathy Vanhoef (KU Leuven University) for reporting this issue.", "bugzilla": {"description": "networkmanager: 4in6 and 6in6 protocols excessive trust", "id": "2337531", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2337531"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:L", "status": "draft"}, "cwe": "CWE-348", "details": ["IPv4-in-IPv6 and IPv6-in-IPv6 tunneling (RFC 2473) do not require the validation or verification of the source of a network packet, allowing an attacker to spoof and route arbitrary traffic via an exposed network interface. This is a similar issue to CVE-2020-10136.", "An insecure configuration flaw was found in the IPv4-in-IPv6 and IPv6-in-IPv6 protocols (RFC2473). When configured to not require authentication or filtering, this issue could allow a remote unauthenticated attacker to spoof packets or bypass access controls."], "mitigation": {"lang": "en:us", "value": "See references section for detailed guidance."}, "name": "CVE-2025-23018", "public_date": "2025-01-14T12:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-23018"], "statement": "This vulnerability is rated as Low impact as it requires a known higher risk configuration. Multiple layers of defaults (packet forwarding and these specific protocols) are disabled by default. Red Hat provides guidance in documentation (linked in references section) on how to configure the system in a more secure manner, which avoids the risk of this vulnerability.", "threat_severity": "Low"}