CVE-2016-1908

CVE	CVE-2016-1908
State	PUBLIC
Assigner	[email protected]
Source Priority	CVE Program / NVD first with legacy fallback
Published	2017-04-11 18:59:00 UTC
Updated	2022-12-13 12:15:00 UTC
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.

Problem Types: CWE-287

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Debian	Debian Linux	8.0	All	All	All
Application	Openbsd	Openssh	All	All	All	All
Application	Openbsd	Openssh	All	p2	All	All
Operating System	Oracle	Linux	6	-	All	All
Operating System	Oracle	Linux	7	-	All	All
Operating System	Redhat	Enterprise Linux Desktop	6.0	All	All	All
Operating System	Redhat	Enterprise Linux Desktop	7.0	All	All	All
Operating System	Redhat	Enterprise Linux Eus	7.2	All	All	All
Operating System	Redhat	Enterprise Linux Eus	7.3	All	All	All
Operating System	Redhat	Enterprise Linux Eus	7.4	All	All	All
Operating System	Redhat	Enterprise Linux Eus	7.5	All	All	All
Operating System	Redhat	Enterprise Linux Eus	7.6	All	All	All
Operating System	Redhat	Enterprise Linux Eus	7.7	All	All	All
Operating System	Redhat	Enterprise Linux Server	6.0	All	All	All
Operating System	Redhat	Enterprise Linux Server	7.0	All	All	All
Operating System	Redhat	Enterprise Linux Server Aus	7.2	All	All	All
Operating System	Redhat	Enterprise Linux Server Aus	7.3	All	All	All
Operating System	Redhat	Enterprise Linux Server Aus	7.4	All	All	All
Operating System	Redhat	Enterprise Linux Server Aus	7.6	All	All	All
Operating System	Redhat	Enterprise Linux Server Aus	7.7	All	All	All
Operating System	Redhat	Enterprise Linux Server Tus	7.2	All	All	All
Operating System	Redhat	Enterprise Linux Server Tus	7.3	All	All	All
Operating System	Redhat	Enterprise Linux Server Tus	7.6	All	All	All
Operating System	Redhat	Enterprise Linux Server Tus	7.7	All	All	All
Operating System	Redhat	Enterprise Linux Workstation	6.0	All	All	All
Operating System	Redhat	Enterprise Linux Workstation	7.0	All	All	All

Reference	Source	Link	Tags
[SECURITY] [DLA 1500-1] openssh security update	MLIST	lists.debian.org
OpenSSH X11 Forwarding Flaw Lets Users Bypass Trust Restrictions - SecurityTracker	SECTRACK	www.securitytracker.com
Red Hat Customer Portal	REDHAT	rhn.redhat.com
Red Hat Customer Portal	REDHAT	rhn.redhat.com
oss-security - Re: Qualys Security Advisory - Roaming through the OpenSSH client: CVE-2016-0777 and CVE-2016-0778	MLIST	openwall.com	Mailing List, Third Party Advisory
OpenSSH: Multiple vulnerabilities (GLSA 201612-18) — Gentoo security	GENTOO	security.gentoo.org
www.openssh.com/txt/release-7.2	CONFIRM	www.openssh.com	Release Notes, Vendor Advisory
Oracle Linux Bulletin - April 2016	CONFIRM	www.oracle.com
cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf	CONFIRM	cert-portal.siemens.com
OpenSSH CVE-2016-1908 Security Bypass Vulnerability	BID	www.securityfocus.com	Third Party Advisory, VDB Entry
openssh.git - Portable OpenSSH	CONFIRM	anongit.mindrot.org	Patch
Bug 1298741 – CVE-2016-1908 openssh: possible fallback from untrusted to trusted X11 forwarding	CONFIRM	bugzilla.redhat.com	Issue Tracking, Patch, Third Party Advisory
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

38906 OpenSSH Improper Failed Cookie Generation Handling Vulnerability (CVE-2016-1908)
591280 Siemens SCALANCE X-200RNA Switch Devices Denial of Service (DoS) Multiple Vulnerabilities (ICSA-22-349-21, SSA-412672)