{"id":"CVE-2016-1908","state":"PUBLISHED","title":"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 remo","description":"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.","publishedAt":"2017-04-11T00:00:00.000Z","updatedAt":"2026-05-29T20:14:45.314Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"redhat","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["http://www.openssh.com/txt/release-7.2","http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html","https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c","http://openwall.com/lists/oss-security/2016/01/15/13","http://www.securitytracker.com/id/1034705","http://rhn.redhat.com/errata/RHSA-2016-0741.html","https://security.gentoo.org/glsa/201612-18","https://bugzilla.redhat.com/show_bug.cgi?id=1298741","https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html","http://www.securityfocus.com/bid/84427","http://rhn.redhat.com/errata/RHSA-2016-0465.html","https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T19:42:33.324Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2016/1xxx/CVE-2016-1908.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2016-1908","state":"PUBLISHED","datePublished":"2017-04-11T00:00:00.000Z","dateUpdated":"2026-05-29T20:14:45.314Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2016-01-15T00:00:00.000Z"},"containers":{"cna":{"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"},{"url":"http://openwall.com/lists/oss-security/2016/01/15/13","name":"[oss-security] 20160115 Re: Qualys Security Advisory - 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