CVE-2017-20002

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "The Debian shadow package before 1:4.5-1 for Shadow incorrectly lists pts/0 and pts/1 as physical terminals in /etc/securetty. This allows local users to login as password-less users even if they are connected by non-physical means such as SSH (hence bypassing PAM's nullok_secure configuration). This notably affects environments such as virtual machines automatically generated with a default blank root password, allowing all local users to escalate privileges."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-03-18T03:57:29.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374"}, {"tags": ["x_refsource_MISC"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957"}, {"name": "[debian-lts-announce] 20210317 [SECURITY] [DLA 2596-1] shadow security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2017-20002", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The Debian shadow package before 1:4.5-1 for Shadow incorrectly lists pts/0 and pts/1 as physical terminals in /etc/securetty. This allows local users to login as password-less users even if they are connected by non-physical means such as SSH (hence bypassing PAM's nullok_secure configuration). This notably affects environments such as virtual machines automatically generated with a default blank root password, allowing all local users to escalate privileges."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374", "refsource": "MISC", "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374"}, {"name": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957", "refsource": "MISC", "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957"}, {"name": "[debian-lts-announce] 20210317 [SECURITY] [DLA 2596-1] shadow security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T21:45:24.409Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957"}, {"name": "[debian-lts-announce] 20210317 [SECURITY] [DLA 2596-1] shadow security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2017-20002", "datePublished": "2021-03-17T06:00:09.000Z", "dateReserved": "2021-03-17T00:00:00.000Z", "dateUpdated": "2024-08-05T21:45:24.409Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:debian:shadow:4.4:*:*:*:*:*:*:*", "matchCriteriaId": "C1317D10-D7BA-4A18-8667-7542A44A4989", "vulnerable": true}, {"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": "The Debian shadow package before 1:4.5-1 for Shadow incorrectly lists pts/0 and pts/1 as physical terminals in /etc/securetty. This allows local users to login as password-less users even if they are connected by non-physical means such as SSH (hence bypassing PAM's nullok_secure configuration). This notably affects environments such as virtual machines automatically generated with a default blank root password, allowing all local users to escalate privileges."}, {"lang": "es", "value": "El paquete shadow de Debian versiones anteriores a 4.5-1 para Shadow, enumera incorrectamente pts/0 y pts/1 como terminales f\u00edsicos en /etc/securetty. Esto permite a usuarios locales iniciar sesi\u00f3n como usuarios sin contrase\u00f1a incluso si est\u00e1n conectados por medios no f\u00edsicos como SSH (por lo tanto, omitiendo una configuraci\u00f3n nullok_secure de PAM). Esto afecta notablemente a entornos como las m\u00e1quinas virtuales generadas autom\u00e1ticamente con una contrase\u00f1a root en blanco predeterminada, permitiendo a todos los usuarios locales escalar privilegios"}], "id": "CVE-2017-20002", "lastModified": "2026-06-17T01:14:54.317", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-17T06:15:12.107", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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