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CVE-2016-1908

CRITICAL
9.8
CVSS Severity Score
EPSS Score0.1400%
EPSS Percentile34.52th
PublishedApr 11, 2017
Last ModifiedMay 29, 2026

Vulnerability 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.

Affected Platforms (CPE)

πŸ“¦
Openbsd

Openssh

< 7.2
πŸ’»
Debian

Debian Linux

= 8.0
πŸ’»
Oracle

Linux

= 6
πŸ’»
Oracle

Linux

= 7
πŸ’»
Redhat

Enterprise Linux Desktop

= 6.0
πŸ’»
Redhat

Enterprise Linux Desktop

= 7.0
πŸ’»
Redhat

Enterprise Linux Eus

= 7.2
πŸ’»
Redhat

Enterprise Linux Eus

= 7.3
πŸ’»
Redhat

Enterprise Linux Eus

= 7.4
πŸ’»
Redhat

Enterprise Linux Eus

= 7.5
πŸ’»
Redhat

Enterprise Linux Eus

= 7.6
πŸ’»
Redhat

Enterprise Linux Eus

= 7.7
πŸ’»
Redhat

Enterprise Linux Server

= 6.0
πŸ’»
Redhat

Enterprise Linux Server

= 7.0
πŸ’»
Redhat

Enterprise Linux Server Aus

= 7.2
πŸ’»
Redhat

Enterprise Linux Server Aus

= 7.3
πŸ’»
Redhat

Enterprise Linux Server Aus

= 7.4
πŸ’»
Redhat

Enterprise Linux Server Aus

= 7.6
πŸ’»
Redhat

Enterprise Linux Server Aus

= 7.7
πŸ’»
Redhat

Enterprise Linux Server Tus

= 7.2
πŸ’»
Redhat

Enterprise Linux Server Tus

= 7.3
πŸ’»
Redhat

Enterprise Linux Server Tus

= 7.6
πŸ’»
Redhat

Enterprise Linux Server Tus

= 7.7
πŸ’»
Redhat

Enterprise Linux Workstation

= 6.0
πŸ’»
Redhat

Enterprise Linux Workstation

= 7.0

References & Advisories

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