CVE-2020-8619

{"containers": {"cna": {"affected": [{"product": "BIND9", "vendor": "ISC", "versions": [{"status": "affected", "version": "9.11.14 through versions before 9.11.20"}, {"status": "affected", "version": "9.16.0 through versions before 9.16.4"}, {"status": "affected", "version": "9.11.14-S1 through versions before 9.11.20-S1"}, {"status": "affected", "version": "9.14.9 through versions 9.14.12"}]}], "datePublic": "2020-06-10T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk (\"*\") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"description": "The asterisk character (\"*\") is allowed in DNS zone files, where it is most commonly present as a wildcard at a terminal node of the Domain Name System graph. However, the RFCs do not require and BIND does not enforce that an asterisk character be present only at a terminal node. A problem can occur when an asterisk is present in an empty non-terminal location within the DNS graph. If such a node exists, after a series of queries, named can reach an inconsistent state that results in the failure of an assertion check in rbtdb.c, followed by the program exiting due to the assertion failure. Versions affected: BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3. Also, versions 9.11.14-S1 -> 9.11.19-S1 of BIND Supported Preview Edition", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-10-20T11:06:44.000Z", "orgId": "404fd4d2-a609-4245-b543-2c944a302a22", "shortName": "isc"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://kb.isc.org/docs/cve-2020-8619"}, {"name": "FEDORA-2020-54a91444ff", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNFTTYJ5JJJJ6QG3AHXJGDIIEYMDFWFW/"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://security.netapp.com/advisory/ntap-20200625-0003/"}, {"name": "FEDORA-2020-5f8da4b260", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EIOXMJX4N3LBKC65OXNBE52W4GAS7QEX/"}, {"name": "USN-4399-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "https://usn.ubuntu.com/4399-1/"}, {"name": "DSA-4752", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "https://www.debian.org/security/2020/dsa-4752"}, {"name": "openSUSE-SU-2020:1699", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"}, {"name": "openSUSE-SU-2020:1701", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"}], "solutions": [{"lang": "en", "value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n BIND 9.11.20\n BIND 9.16.4\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n BIND 9.11.20-S1"}], "source": {"discovery": "USER"}, "title": "A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer", "workarounds": [{"lang": "en", "value": "None"}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-officer@isc.org", "DATE_PUBLIC": "2020-06-10T19:10:58.000Z", "ID": "CVE-2020-8619", "STATE": "PUBLIC", "TITLE": "A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "BIND9", "version": {"version_data": [{"version_value": "9.11.14 through versions before 9.11.20"}, {"version_value": "9.16.0 through versions before 9.16.4"}, {"version_value": "9.11.14-S1 through versions before 9.11.20-S1"}, {"version_value": "9.14.9 through versions 9.14.12"}]}}]}, "vendor_name": "ISC"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk (\"*\") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable."}]}, "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "The asterisk character (\"*\") is allowed in DNS zone files, where it is most commonly present as a wildcard at a terminal node of the Domain Name System graph. However, the RFCs do not require and BIND does not enforce that an asterisk character be present only at a terminal node. A problem can occur when an asterisk is present in an empty non-terminal location within the DNS graph. If such a node exists, after a series of queries, named can reach an inconsistent state that results in the failure of an assertion check in rbtdb.c, followed by the program exiting due to the assertion failure. Versions affected: BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3. Also, versions 9.11.14-S1 -> 9.11.19-S1 of BIND Supported Preview Edition"}]}]}, "references": {"reference_data": [{"name": "https://kb.isc.org/docs/cve-2020-8619", "refsource": "CONFIRM", "url": "https://kb.isc.org/docs/cve-2020-8619"}, {"name": "FEDORA-2020-54a91444ff", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CNFTTYJ5JJJJ6QG3AHXJGDIIEYMDFWFW/"}, {"name": "https://security.netapp.com/advisory/ntap-20200625-0003/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20200625-0003/"}, {"name": "FEDORA-2020-5f8da4b260", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EIOXMJX4N3LBKC65OXNBE52W4GAS7QEX/"}, {"name": "USN-4399-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4399-1/"}, {"name": "DSA-4752", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2020/dsa-4752"}, {"name": "openSUSE-SU-2020:1699", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"}, {"name": "openSUSE-SU-2020:1701", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"}]}, "solution": [{"lang": "en", "value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n BIND 9.11.20\n BIND 9.16.4\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n BIND 9.11.20-S1"}], "source": {"discovery": "USER"}, "work_around": [{"lang": "en", "value": "None"}]}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T10:03:46.317Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://kb.isc.org/docs/cve-2020-8619"}, {"name": "FEDORA-2020-54a91444ff", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNFTTYJ5JJJJ6QG3AHXJGDIIEYMDFWFW/"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://security.netapp.com/advisory/ntap-20200625-0003/"}, {"name": "FEDORA-2020-5f8da4b260", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EIOXMJX4N3LBKC65OXNBE52W4GAS7QEX/"}, {"name": "USN-4399-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "https://usn.ubuntu.com/4399-1/"}, {"name": "DSA-4752", "tags": ["vendor-advisory", "x_refsource_DEBIAN", "x_transferred"], "url": "https://www.debian.org/security/2020/dsa-4752"}, {"name": "openSUSE-SU-2020:1699", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"}, {"name": "openSUSE-SU-2020:1701", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"}]}]}, "cveMetadata": {"assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22", "assignerShortName": "isc", "cveId": "CVE-2020-8619", "datePublished": "2020-06-17T21:20:13.611Z", "dateReserved": "2020-02-05T00:00:00.000Z", "dateUpdated": "2024-09-17T03:28:34.772Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable."}, {"lang": "es", "value": "En las versiones ISC BIND9 BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: A menos que un servidor de nombres proporcione un servicio autorizado para una o m\u00e1s zonas y al menos una zona contenga una entrada sin terminal vac\u00eda que contenga un car\u00e1cter asterisco (\"*\"), este defecto no puede ser encontrado. Un posible atacante al que se le permite cambiar el contenido de la zona, podr\u00eda introducir te\u00f3ricamente dicho registro para explotar esta condici\u00f3n y causar una denegaci\u00f3n de servicio, aunque consideramos que el uso de este vector es poco probable porque cualquier ataque requerir\u00eda de un nivel de privilegio significativo y que sea f\u00e1cilmente rastreable"}], "id": "CVE-2020-8619", "lastModified": "2026-09-01T20:57:40.370", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 4.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 3.6, "source": "security-officer@isc.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-06-17T22:15:13.070", "references": [{"source": "security-officer@isc.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"}, {"source": "security-officer@isc.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"}, {"source": "security-officer@isc.org", "tags": ["Vendor Advisory"], "url": "https://kb.isc.org/docs/cve-2020-8619"}, {"source": "security-officer@isc.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNFTTYJ5JJJJ6QG3AHXJGDIIEYMDFWFW/"}, {"source": "security-officer@isc.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EIOXMJX4N3LBKC65OXNBE52W4GAS7QEX/"}, {"source": "security-officer@isc.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20200625-0003/"}, {"source": "security-officer@isc.org", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4399-1/"}, {"source": "security-officer@isc.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2020/dsa-4752"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.isc.org/docs/cve-2020-8619"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNFTTYJ5JJJJ6QG3AHXJGDIIEYMDFWFW/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EIOXMJX4N3LBKC65OXNBE52W4GAS7QEX/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20200625-0003/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4399-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2020/dsa-4752"}], "sourceIdentifier": "security-officer@isc.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-404"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank ISC for reporting this issue.", "affected_release": [{"advisory": "RHSA-2020:4500", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "bind-32:9.11.20-5.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-11-04T00:00:00Z"}, {"advisory": "RHSA-2020:4500", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "bind-32:9.11.20-5.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-11-04T00:00:00Z"}], "bugzilla": {"description": "bind: asterisk character in an empty non-terminal can cause an assertion failure in rbtdb.c", "id": "1847244", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1847244"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-617", "details": ["In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk (\"*\") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable.", "A flaw was found in bind when an asterisk character is present in an empty non-terminal location within the DNS graph. This flaw could trigger an assertion failure, causing bind to crash. The highest threat from this vulnerability is to system availability."], "mitigation": {"lang": "en:us", "value": "As per upstream advisory: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk (\"*\") character this defect cannot be encountered.\nA would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable."}, "name": "CVE-2020-8619", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "bind", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "bind97", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "bind", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "bind", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2020-06-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-8619\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-8619\nhttps://kb.isc.org/docs/cve-2020-8619"], "statement": "Based on upstream affected versions, this flaw only affects the versions of bind shipped with Red Hat Enterprise Linux 8.", "threat_severity": "Moderate"}

{}