CVE-2020-10704

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{"affected": [{"affectedData": [{"product": "samba", "vendor": "Red Hat", "versions": [{"status": "affected", "version": "All versions before 4.10.15"}, {"status": "affected", "version": "All versions before 4.11.8"}, {"status": "affected", "version": "All versions before 4.12.2"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*", "matchCriteriaId": "591689A0-5B37-43D8-98D7-281D87AB4441", "versionEndExcluding": "4.10.15", "versionStartIncluding": "4.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*", "matchCriteriaId": "6D64695F-4DA0-447A-A567-A53B77DC4ECC", "versionEndExcluding": "4.11.8", "versionStartIncluding": "4.11.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*", "matchCriteriaId": "B2D79B66-1C66-4A71-BA5B-F0F14FC64558", "versionEndExcluding": "4.12.2", "versionStartIncluding": "4.12.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*", "matchCriteriaId": "97A4B8DF-58DA-4AB6-A1F9-331B36409BA3", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*", "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*", "matchCriteriaId": "B009C22E-30A4-4288-BCF6-C3E81DEAF45A", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo cuando se usa samba como un Active Directory Domain Controller. Debido a la manera como samba maneja determinadas peticiones como un servidor Active Directory Domain Controller LDAP, un usuario no autorizado puede causar un desbordamiento de la pila conllevando a una denegaci\u00f3n de servicio. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema. Este problema afecta a todas las versiones de samba anteriores a 4.10.15, anteriores a 4.11.8 y anteriores a 4.12.2."}], "id": "CVE-2020-10704", "lastModified": "2026-06-17T02:48:17.283", "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}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "secalert@redhat.com", "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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-05-06T14:15:10.817", "references": [{"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10704"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html"}, {"source": "secalert@redhat.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5KW3ZO35NVDO57JSBZHTQZOS3AIQ5QE/"}, {"source": "secalert@redhat.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y7DVGCHG3XPIBQ5ETGMGW7MXNOO4HFH4/"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202007-15"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://www.samba.org/samba/security/CVE-2020-10704.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10704"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5KW3ZO35NVDO57JSBZHTQZOS3AIQ5QE/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y7DVGCHG3XPIBQ5ETGMGW7MXNOO4HFH4/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202007-15"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.samba.org/samba/security/CVE-2020-10704.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-674"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-674"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Samba project for reporting this issue.", "bugzilla": {"description": "samba: LDAP Denial of Service (stack overflow) in Samba AD DC", "id": "1825734", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1825734"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-674", "details": ["A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.", "A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability."], "mitigation": {"lang": "en:us", "value": "By default, Samba 4.10 is run using the \"standard\" process model, which would leave only the CLDAP server affected. (Later versions use 'prefork').\nThis is controlled by the -M or --model parameter to the samba binary.\nAll Samba versions are impacted if -M prefork or -M single is used. To mitigate this issue for LDAP only, select -M standard (however this will use more memory, may allow resource exhaustion, and will still leave the CLDAP server exposed)."}, "name": "CVE-2020-10704", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "samba3x", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "samba4", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:storage:3", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Storage 3"}], "public_date": "2020-04-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-10704\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-10704\nhttps://www.samba.org/samba/security/CVE-2020-10704.html"], "statement": "This flaw does not affect the version of samba shipped with Red Hat Enterprise Linux as there is no support for samba as an Active Directory Domain Controller (AD DC). Similarly, the version of samba shipped with Red Hat Gluster Storage 3 is also not supported for use as an AD DC and, thus, is not affected by this vulnerability.", "threat_severity": "Important"}

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