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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ietf:generic_routing_encapsulation:-:*:*:*:*:*:*:*", "matchCriteriaId": "B962BEC9-66A8-4A0B-AE6D-9A1A7E34686E", "vulnerable": true}, {"criteria": "cpe:2.3:a:ietf:generic_routing_encapsulation6:-:*:*:*:*:*:*:*", "matchCriteriaId": "4726FA71-5F65-4746-B9F9-6205569B019F", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "GRE and GRE6 Protocols (RFC2784) do not validate or verify the source of a network packet allowing an attacker to spoof and route arbitrary traffic via an exposed network interface that can lead to spoofing, access control bypass, and other unexpected network behaviors.\r\n\r\nThis can be considered similar to CVE-2020-10136."}, {"lang": "es", "value": "Los protocolos GRE y GRE6 (RFC2784) no validan ni verifican el origen de un paquete de red, lo que permite que un atacante falsifique y enrute tr\u00e1fico arbitrario a trav\u00e9s de una interfaz de red expuesta, lo que puede provocar suplantaci\u00f3n de identidad, omisi\u00f3n del control de acceso y otros comportamientos de red inesperados. Esto puede considerarse similar a CVE-2020-10136."}], "id": "CVE-2024-7595", "lastModified": "2025-02-06T22:15:39.717", "metrics": {"cvssMetricV31": [{"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"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-02-05T18:15:29.360", "references": [{"source": "cret@cert.org", "tags": ["Technical Description", "Related"], "url": "https://datatracker.ietf.org/doc/html/rfc2784"}, {"source": "cret@cert.org", "tags": ["Technical Description", "Related"], "url": "https://www.rfc-editor.org/rfc/rfc6169.html"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Modified", "weaknesses": [{"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: GRE & GRE6 protocol excessive trust", "id": "2317262", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2317262"}, "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": ["GRE and GRE6 Protocols (RFC2784) do not validate or verify the source of a network packet allowing an attacker to spoof and route arbitrary traffic via an exposed network interface that can lead to spoofing, access control bypass, and other unexpected network behaviors.\nThis can be considered similar to CVE-2020-10136.", "An insecure configuration flaw was found in the GRE and GRE6 Protocols. 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-2024-7595", "public_date": "2025-01-14T12:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-7595\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-7595\nhttps://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/configuring-ip-tunnels_configuring-and-managing-networking\nhttps://kb.cert.org/vuls/id/199397\nhttps://papers.mathyvanhoef.com/usenix2025-tunnels.pdf"], "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"}