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.
Metrics
Affected Vendors & Products
References
History
Fri, 29 May 2026 21:30:00 +0000
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ssvc
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Status: PUBLISHED
Assigner: redhat
Published: 2017-04-11T00:00:00.000Z
Updated: 2026-05-29T20:14:45.314Z
Reserved: 2016-01-15T00:00:00.000Z
Link: CVE-2016-1908
Updated: 2024-08-05T23:10:40.244Z
Status : Modified
Published: 2017-04-11T18:59:00.167
Modified: 2026-05-29T21:16:27.137
Link: CVE-2016-1908