CVE-2018-5381

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The parser can enter an infinite loop on invalid capabilities if a Multi-Protocol capability does not have a recognized AFI/SAFI, causing a denial of service."}, {"lang": "es", "value": "El demonio Quagga BGP (bgpd), en versiones anteriores a la 1.2.3, tiene un error en su an\u00e1lisis de \"Capabilities\" en los mensajes BGP OPEN, en la funci\u00f3n bgp_packet.c:bgp_capability_msg_parse. El analizador puede entrar en un bucle infinito o invalidar capacidades si una capacidad Multi-Protocol no tiene un AFI/SAFI reconocido, lo que provocar\u00eda una denegaci\u00f3n de servicio (DoS)."}], "id": "CVE-2018-5381", "lastModified": "2026-06-17T02:00:13.490", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "cret@cert.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-02-19T13:29:00.583", "references": [{"source": "cret@cert.org", "tags": ["Third Party Advisory"], "url": "http://savannah.nongnu.org/forum/forum.php?forum_id=9095"}, {"source": "cret@cert.org", "tags": ["Third Party Advisory", "US Government Resource"], "url": "http://www.kb.cert.org/vuls/id/940439"}, {"source": "cret@cert.org", "tags": ["Mitigation", "Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdf"}, {"source": "cret@cert.org", "tags": ["Vendor Advisory"], "url": "https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txt"}, {"source": "cret@cert.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2018/02/msg00021.html"}, {"source": "cret@cert.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/201804-17"}, {"source": "cret@cert.org", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/3573-1/"}, {"source": "cret@cert.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2018/dsa-4115"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://savannah.nongnu.org/forum/forum.php?forum_id=9095"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "US Government Resource"], "url": "http://www.kb.cert.org/vuls/id/940439"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txt"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2018/02/msg00021.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/201804-17"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/3573-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2018/dsa-4115"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-228"}], "source": "cret@cert.org", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-835"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Quagga project for reporting this issue.", "bugzilla": {"description": "quagga: Infinite loop issue triggered by invalid OPEN message allows denial-of-service", "id": "1542992", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1542992"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-228->CWE-835", "details": ["The Quagga BGP daemon (bgpd) prior to version 1.2.3 has a bug in its parsing of \"Capabilities\" in BGP OPEN messages, in the bgp_packet.c:bgp_capability_msg_parse function. The parser can enter an infinite loop on invalid capabilities if a Multi-Protocol capability does not have a recognized AFI/SAFI, causing a denial of service.", "An infinite loop vulnerability was discovered in Quagga. A BGP peer could send specially crafted packets that would cause the daemon to enter an infinite loop, denying service and consuming CPU until it is restarted."], "name": "CVE-2018-5381", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "quagga", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "quagga", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "quagga", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "quagga", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2018-02-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-5381\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-5381\nhttps://www.quagga.net/security/Quagga-2018-1975.txt"], "threat_severity": "Moderate"}

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