{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2016-1908", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "dateUpdated": "2024-08-05T23:10:40.244Z", "dateReserved": "2016-01-15T00:00:00.000Z", "datePublished": "2017-04-11T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2022-12-13T00:00:00.000Z"}, "descriptions": [{"lang": "en", "value": "The client in OpenSSH before 7.2 mishandles failed cookie generation for untrusted X11 forwarding and relies on the local X11 server for access-control decisions, which allows remote X11 clients to trigger a fallback and obtain trusted X11 forwarding privileges by leveraging configuration issues on this X11 server, as demonstrated by lack of the SECURITY extension on this X11 server."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "http://www.openssh.com/txt/release-7.2"}, {"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"}, {"url": "https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c"}, {"name": "[oss-security] 20160115 Re: Qualys Security Advisory - Roaming through the OpenSSH client: CVE-2016-0777 and CVE-2016-0778", "tags": ["mailing-list"], "url": "http://openwall.com/lists/oss-security/2016/01/15/13"}, {"name": "1034705", "tags": ["vdb-entry"], "url": "http://www.securitytracker.com/id/1034705"}, {"name": "RHSA-2016:0741", "tags": ["vendor-advisory"], "url": "http://rhn.redhat.com/errata/RHSA-2016-0741.html"}, {"name": "GLSA-201612-18", "tags": ["vendor-advisory"], "url": "https://security.gentoo.org/glsa/201612-18"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1298741"}, {"name": "[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"}, {"name": "84427", "tags": ["vdb-entry"], "url": "http://www.securityfocus.com/bid/84427"}, {"name": "RHSA-2016:0465", "tags": ["vendor-advisory"], "url": "http://rhn.redhat.com/errata/RHSA-2016-0465.html"}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}], "datePublic": "2016-01-14T00:00:00.000Z"}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T23:10:40.244Z"}, "title": "CVE Program Container", "references": [{"url": "http://www.openssh.com/txt/release-7.2", "tags": ["x_transferred"]}, {"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html", "tags": ["x_transferred"]}, {"url": "https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c", "tags": ["x_transferred"]}, {"name": "[oss-security] 20160115 Re: Qualys Security Advisory - Roaming through the OpenSSH client: CVE-2016-0777 and CVE-2016-0778", "tags": ["mailing-list", "x_transferred"], "url": "http://openwall.com/lists/oss-security/2016/01/15/13"}, {"name": "1034705", "tags": ["vdb-entry", "x_transferred"], "url": "http://www.securitytracker.com/id/1034705"}, {"name": "RHSA-2016:0741", "tags": ["vendor-advisory", "x_transferred"], "url": "http://rhn.redhat.com/errata/RHSA-2016-0741.html"}, {"name": "GLSA-201612-18", "tags": ["vendor-advisory", "x_transferred"], "url": "https://security.gentoo.org/glsa/201612-18"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1298741", "tags": ["x_transferred"]}, {"name": "[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update", "tags": ["mailing-list", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"}, {"name": "84427", "tags": ["vdb-entry", "x_transferred"], "url": "http://www.securityfocus.com/bid/84427"}, {"name": "RHSA-2016:0465", "tags": ["vendor-advisory", "x_transferred"], "url": "http://rhn.redhat.com/errata/RHSA-2016-0465.html"}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf", "tags": ["x_transferred"]}]}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*", "matchCriteriaId": "4A62EB95-81D2-4D9A-9214-D9329622C4D5", "versionEndExcluding": "7.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:oracle:linux:6:-:*:*:*:*:*:*", "matchCriteriaId": "D7B037A8-72A6-4DFF-94B2-D688A5F6F876", "vulnerable": true}, {"criteria": "cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*", "matchCriteriaId": "44B8FEDF-6CB0-46E9-9AD7-4445B001C158", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*", "matchCriteriaId": "EE249E1B-A1FD-4E08-AA71-A0E1F10FFE97", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "33C068A4-3780-4EAB-A937-6082DF847564", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:7.2:*:*:*:*:*:*:*", "matchCriteriaId": "AE1D81A1-CD24-4B17-8AFD-DC95E90AD7D0", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:7.3:*:*:*:*:*:*:*", "matchCriteriaId": "807C024A-F8E8-4B48-A349-4C68CD252CA1", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*", "matchCriteriaId": "F96E3779-F56A-45FF-BB3D-4980527D721E", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:*", "matchCriteriaId": "0CF73560-2F5B-4723-A8A1-9AADBB3ADA00", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*", "matchCriteriaId": "5BF3C7A5-9117-42C7-BEA1-4AA378A582EF", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:*", "matchCriteriaId": "83737173-E12E-4641-BC49-0BD84A6B29D0", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*", "matchCriteriaId": "9BBCD86A-E6C7-4444-9D74-F861084090F0", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "51EF4996-72F4-4FA4-814F-F5991E7A8318", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*", "matchCriteriaId": "1C8D871B-AEA1-4407-AEE3-47EC782250FF", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*", "matchCriteriaId": "98381E61-F082-4302-B51F-5648884F998B", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*", "matchCriteriaId": "D99A687E-EAE6-417E-A88E-D0082BC194CD", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*", "matchCriteriaId": "B353CE99-D57C-465B-AAB0-73EF581127D1", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*", "matchCriteriaId": "7431ABC1-9252-419E-8CC1-311B41360078", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:*", "matchCriteriaId": "6755B6AD-0422-467B-8115-34A60B1D1A40", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:*", "matchCriteriaId": "24C0F4E1-C52C-41E0-9F14-F83ADD5CC7ED", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*", "matchCriteriaId": "B76AA310-FEC7-497F-AF04-C3EC1E76C4CC", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*", "matchCriteriaId": "17F256A9-D3B9-4C72-B013-4EFD878BFEA8", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*", "matchCriteriaId": "E5ED5807-55B7-47C5-97A6-03233F4FBC3A", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "825ECE2D-E232-46E0-A047-074B34DB1E97", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The client in OpenSSH before 7.2 mishandles failed cookie generation for untrusted X11 forwarding and relies on the local X11 server for access-control decisions, which allows remote X11 clients to trigger a fallback and obtain trusted X11 forwarding privileges by leveraging configuration issues on this X11 server, as demonstrated by lack of the SECURITY extension on this X11 server."}, {"lang": "es", "value": "El cliente en OpenSSH en versiones anteriores a 7.2 no maneja correctamente fall\u00f3 en la generaci\u00f3n de cookies para el reenv\u00edo X11 no confiable y conf\u00eda en el servidor X11 local para las decisiones de control de acceso, lo que permite a los clientes remotos X11 activar un fallback y obtener privilegios de reenv\u00edo X11 confiables aprovechando los problemas de configuraci\u00f3n de este servidor X11, como lo demuestra la falta de la extensi\u00f3n SECURITY en este servidor X11."}], "id": "CVE-2016-1908", "lastModified": "2026-05-13T00:24:29.033", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-04-11T18:59:00.167", "references": [{"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://openwall.com/lists/oss-security/2016/01/15/13"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "http://rhn.redhat.com/errata/RHSA-2016-0465.html"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "http://rhn.redhat.com/errata/RHSA-2016-0741.html"}, {"source": "secalert@redhat.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "http://www.openssh.com/txt/release-7.2"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/84427"}, {"source": "secalert@redhat.com", "tags": ["Broken Link", "Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1034705"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1298741"}, {"source": "secalert@redhat.com", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/201612-18"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://openwall.com/lists/oss-security/2016/01/15/13"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://rhn.redhat.com/errata/RHSA-2016-0465.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://rhn.redhat.com/errata/RHSA-2016-0741.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "http://www.openssh.com/txt/release-7.2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/84427"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link", "Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1034705"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1298741"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/201612-18"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2016:0741", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "openssh-0:5.3p1-117.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2016-05-10T00:00:00Z"}, {"advisory": "RHSA-2016:0465", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "openssh-0:6.6.1p1-25.el7_2", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2016-03-21T00:00:00Z"}], "bugzilla": {"description": "openssh: possible fallback from untrusted to trusted X11 forwarding", "id": "1298741", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1298741"}, "csaw": false, "cvss": {"cvss_base_score": "4.9", "cvss_scoring_vector": "AV:N/AC:M/Au:S/C:P/I:P/A:N", "status": "verified"}, "cwe": "CWE-284", "details": ["The client in OpenSSH before 7.2 mishandles failed cookie generation for untrusted X11 forwarding and relies on the local X11 server for access-control decisions, which allows remote X11 clients to trigger a fallback and obtain trusted X11 forwarding privileges by leveraging configuration issues on this X11 server, as demonstrated by lack of the SECURITY extension on this X11 server.", "An access flaw was discovered in OpenSSH; the OpenSSH client did not correctly handle failures to generate authentication cookies for untrusted X11 forwarding. A malicious or compromised remote X application could possibly use this flaw to establish a trusted connection to the local X server, even if only untrusted X11 forwarding was requested."], "name": "CVE-2016-1908", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2016-01-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-1908\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-1908"], "threat_severity": "Moderate"}

{}