{"containers": {"cna": {"affected": [{"product": "BIND9", "vendor": "ISC", "versions": [{"status": "affected", "version": "Open Source Branches 9.5 though 9.11 9.5.0 through versions before 9.11.28"}, {"status": "affected", "version": "Open Source Branches 9.12 though 9.16 9.12.0 through versions before 9.16.12"}, {"status": "affected", "version": "Supported Preview Branch 9.11-S 9.11.3-S1 through versions before 9.11.28-S1"}, {"status": "affected", "version": "Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.12-S1"}, {"status": "affected", "version": "Development Branch 9.17 9.17.0 through versions before 9.17.2"}]}], "credits": [{"lang": "en", "value": "ISC would like to thank an anonymous party, working in conjunction with Trend Micro Zero Day Initiative, for reporting this issue to us."}], "datePublic": "2021-02-17T00:00:00", "descriptions": [{"lang": "en", "value": "BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. 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Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch"}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"description": "BIND 9.5.0 -> 9.11.27, 9.12.0 -> 9.16.11, and versions BIND 9.11.3-S1 -> 9.11.27-S1 and 9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition. Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch:GSS-TSIG is an extension to the TSIG protocol which is intended to support the secure exchange of keys for use in verifying the authenticity of communications between parties on a network. 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If another mechanism can be used to authenticate updates, the vulnerability can be avoided by choosing not to enable the use of GSS-TSIG features.\n\nOn some platforms it may be possible to build a working BIND installation that is not vulnerable to CVE-2020-8625 by providing the --disable-isc-spnego command-line argument when running the ./configure script in the top level of the BIND source directory, before compiling and linking named.\n\nChoosing to configure and build BIND without the ISC SPNEGO implementation does not produce a vulnerable BIND on any platform, but on platforms where GSSAPI support in the system is lacking, building without the ISC SPNEGO implementation may result in unusable GSSAPI features (such as an inability to use GSS-TSIG-signed DDNS updates)."}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-officer@isc.org", "DATE_PUBLIC": "2021-02-17T20:01:13.000Z", "ID": "CVE-2020-8625", "STATE": "PUBLIC", "TITLE": "A vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "BIND9", "version": {"version_data": [{"version_name": "Open Source Branches 9.5 though 9.11", "version_value": "9.5.0 through versions before 9.11.28"}, {"version_name": "Open Source Branches 9.12 though 9.16", "version_value": "9.12.0 through versions before 9.16.12"}, {"version_name": "Supported Preview Branch 9.11-S", "version_value": "9.11.3-S1 through versions before 9.11.28-S1"}, {"version_name": "Supported Preview Branch 9.16-S", "version_value": "9.16.8-S1 through versions before 9.16.12-S1"}, {"version_name": "Development Branch 9.17", "version_value": "9.17.0 through versions before 9.17.2"}]}}]}, "vendor_name": "ISC"}]}}, "credit": [{"lang": "eng", "value": "ISC would like to thank an anonymous party, working in conjunction with Trend Micro Zero Day Initiative, for reporting this issue to us."}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. 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Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch"}, {"lang": "es", "value": "Los servidores BIND son vulnerables si ejecutan una versi\u00f3n afectada y est\u00e1n configurados para usar las funcionalidades GSS-TSIG. En una configuraci\u00f3n que usa la configuraci\u00f3n predeterminada de BIND, la ruta del c\u00f3digo vulnerable no est\u00e1 expuesta, pero un servidor puede volverse vulnerable estableciendo expl\u00edcitamente valores v\u00e1lidos para las opciones de configuraci\u00f3n tkey-gssapi-keytab o tkey-gssapi-credential. Aunque la configuraci\u00f3n predeterminada no es vulnerable, GSS-TSIG se usa con frecuencia en redes donde BIND est\u00e1 integrado con Samba, as\u00ed como entornos de servidores mixtos que combinan servidores BIND con controladores de dominio de Active Directory. El resultado m\u00e1s probable de una explotaci\u00f3n con \u00e9xito de la vulnerabilidad es un bloqueo del proceso nombrado. Sin embargo, la ejecuci\u00f3n de c\u00f3digo remota, aunque no est\u00e1 probada, es te\u00f3ricamente posible. Afecta: BIND versiones 9.5.0 hasta 9.11.27, versiones 9.12.0 hasta 9.16.11 y versiones de BIND 9.11.3-S1 hasta 9.11.27-S1 y versiones 9.16.8-S1 hasta 9.16.11-S1 de BIND Supported Preview Edition. Tambi\u00e9n versiones de lanzamiento 9.17.0 hasta 9.17.1 de la rama de desarrollo de BIND versi\u00f3n 9.17"}], "id": "CVE-2020-8625", "lastModified": "2024-11-21T05:39:09.040", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "security-officer@isc.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-17T23:15:13.530", "references": [{"source": "security-officer@isc.org", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2021/02/19/1"}, {"source": "security-officer@isc.org", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2021/02/20/2"}, {"source": "security-officer@isc.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"}, {"source": "security-officer@isc.org", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://kb.isc.org/v1/docs/cve-2020-8625"}, {"source": "security-officer@isc.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00029.html"}, {"source": "security-officer@isc.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EBTPWRQWRQEJNWY4NHO4WLS4KLJ3ERHZ/"}, {"source": "security-officer@isc.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYXAF7G45RXDVNUTWWCI2CVTHRZ67LST/"}, {"source": "security-officer@isc.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QWCMBOSZOJIIET7BWTRYS3HLX5TSDKHX/"}, {"source": "security-officer@isc.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20210319-0001/"}, {"source": "security-officer@isc.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-4857"}, {"source": "security-officer@isc.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-195/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2021/02/19/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2021/02/20/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://kb.isc.org/v1/docs/cve-2020-8625"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00029.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EBTPWRQWRQEJNWY4NHO4WLS4KLJ3ERHZ/"}, {"source": 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{"acknowledgement": "Red Hat would like to thank ISC for reporting this issue. Upstream acknowledges Trend Micro Zero Day Initiative as the original reporter.", "affected_release": [{"advisory": "RHSA-2021:0672", "cpe": "cpe:/o:redhat:rhel_els:6", "package": "bind-32:9.8.2-0.68.rc1.el6_10.10", "product_name": "Red Hat Enterprise Linux 6 Extended Lifecycle Support", "release_date": "2021-03-01T00:00:00Z"}, {"advisory": "RHSA-2021:0671", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "bind-32:9.11.4-26.P2.el7_9.4", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-03-01T00:00:00Z"}, {"advisory": "RHSA-2021:0694", "cpe": "cpe:/o:redhat:rhel_aus:7.2", "package": "bind-32:9.9.4-29.el7_2.10", "product_name": "Red Hat Enterprise Linux 7.2 Advanced Update Support", "release_date": "2021-03-03T00:00:00Z"}, {"advisory": "RHSA-2021:0693", "cpe": "cpe:/o:redhat:rhel_aus:7.3", "package": "bind-32:9.9.4-50.el7_3.5", "product_name": "Red Hat Enterprise Linux 7.3 Advanced Update Support", "release_date": "2021-03-03T00:00:00Z"}, {"advisory": "RHSA-2021:0692", "cpe": "cpe:/o:redhat:rhel_aus:7.4", "package": "bind-32:9.9.4-51.el7_4.5", "product_name": "Red Hat Enterprise Linux 7.4 Advanced Update Support", "release_date": "2021-03-03T00:00:00Z"}, {"advisory": "RHSA-2021:0692", "cpe": "cpe:/o:redhat:rhel_tus:7.4", "package": "bind-32:9.9.4-51.el7_4.5", "product_name": "Red Hat Enterprise Linux 7.4 Telco Extended Update Support", "release_date": "2021-03-03T00:00:00Z"}, {"advisory": "RHSA-2021:0692", "cpe": "cpe:/o:redhat:rhel_e4s:7.4", "package": "bind-32:9.9.4-51.el7_4.5", "product_name": "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions", "release_date": "2021-03-03T00:00:00Z"}, {"advisory": "RHSA-2021:0691", "cpe": "cpe:/o:redhat:rhel_eus:7.6", "package": "bind-32:9.9.4-74.el7_6.6", "product_name": "Red Hat Enterprise Linux 7.6 Extended Update Support", "release_date": "2021-03-03T00:00:00Z"}, {"advisory": "RHSA-2021:0727", "cpe": "cpe:/o:redhat:rhel_eus:7.7", "package": "bind-32:9.11.4-9.P2.el7_7.4", "product_name": "Red Hat Enterprise Linux 7.7 Extended Update Support", "release_date": "2021-03-04T00:00:00Z"}, {"advisory": "RHSA-2021:0670", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "bind-32:9.11.20-5.el8_3.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-03-01T00:00:00Z"}, {"advisory": "RHSA-2021:0670", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "bind-32:9.11.20-5.el8_3.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-03-01T00:00:00Z"}, {"advisory": "RHSA-2021:0669", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "bind-32:9.11.4-26.P2.el8_1.4", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-03-01T00:00:00Z"}, {"advisory": "RHSA-2021:0922", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "bind-32:9.11.13-6.el8_2.2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-03-17T00:00:00Z"}], "bugzilla": {"description": "bind: Buffer overflow in the SPNEGO implementation affecting GSSAPI security policy negotiation", "id": "1928486", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1928486"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-119", "details": ["BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. In a configuration which uses BIND's default settings the vulnerable code path is not exposed, but a server can be rendered vulnerable by explicitly setting valid values for the tkey-gssapi-keytab or tkey-gssapi-credentialconfiguration options. Although the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers. The most likely outcome of a successful exploitation of the vulnerability is a crash of the named process. However, remote code execution, while unproven, is theoretically possible. Affects: BIND 9.5.0 -> 9.11.27, 9.12.0 -> 9.16.11, and versions BIND 9.11.3-S1 -> 9.11.27-S1 and 9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition. Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch", "A buffer overflow flaw was found in the SPNEGO implementation used by BIND. This flaw allows a remote attacker to cause the named process to crash or possibly perform remote code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability."], "mitigation": {"lang": "en:us", "value": "As per upstream:\nBIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features.\nIn a configuration which uses BIND's default settings, the vulnerable code path is NOT exposed, but a server can be rendered vulnerable by explicitly setting valid values for the tkey-gssapi-keytab or tkey-gssapi-credentialconfiguration options.\nAlthough the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers.\nThis vulnerability only affects servers configured to use GSS-TSIG, most often to sign dynamic updates. If another mechanism can be used to authenticate updates, the vulnerability can be avoided by choosing not to enable the use of GSS-TSIG features."}, "name": "CVE-2020-8625", "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": "Out of support scope", "package_name": "bind97", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2021-02-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-8625\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-8625\nhttps://kb.isc.org/docs/cve-2020-8625"], "statement": "BIND servers shipped with Red Hat Enterprise Linux are compiled with GSS-TSIG and are therefore affected by this flaw. However, these BIND packages use the default settings and are not vulnerable by default.", "threat_severity": "Important", "upstream_fix": "bind 9.11.28, bind 9.16.12"}