Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2016-1908

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.

Published

2017-04-11T18:59:00.167

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-287

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	openbsd	openssh	< 7.2	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	oracle	linux	6	Yes
Operating System	oracle	linux	7	Yes
Operating System	redhat	enterprise_linux_desktop	6.0	Yes
Operating System	redhat	enterprise_linux_desktop	7.0	Yes
Operating System	redhat	enterprise_linux_eus	7.2	Yes
Operating System	redhat	enterprise_linux_eus	7.3	Yes
Operating System	redhat	enterprise_linux_eus	7.4	Yes
Operating System	redhat	enterprise_linux_eus	7.5	Yes
Operating System	redhat	enterprise_linux_eus	7.6	Yes
Operating System	redhat	enterprise_linux_eus	7.7	Yes
Operating System	redhat	enterprise_linux_server	6.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	Yes
Operating System	redhat	enterprise_linux_server_aus	7.2	Yes
Operating System	redhat	enterprise_linux_server_aus	7.3	Yes
Operating System	redhat	enterprise_linux_server_aus	7.4	Yes
Operating System	redhat	enterprise_linux_server_aus	7.6	Yes
Operating System	redhat	enterprise_linux_server_aus	7.7	Yes
Operating System	redhat	enterprise_linux_server_tus	7.2	Yes
Operating System	redhat	enterprise_linux_server_tus	7.3	Yes
Operating System	redhat	enterprise_linux_server_tus	7.6	Yes
Operating System	redhat	enterprise_linux_server_tus	7.7	Yes
Operating System	redhat	enterprise_linux_workstation	6.0	Yes
Operating System	redhat	enterprise_linux_workstation	7.0	Yes

References

http://openwall.com/lists/oss-security/2016/01/15/13 Mailing List, Third Party Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0465.html Third Party Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0741.html Third Party Advisory ([email protected])
http://www.openssh.com/txt/release-7.2 Release Notes, Vendor Advisory ([email protected])
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/84427 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1034705 Broken Link, Third Party Advisory, VDB Entry ([email protected])
https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c Patch, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1298741 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf ([email protected])
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html Mailing List, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/201612-18 Third Party Advisory ([email protected])
http://openwall.com/lists/oss-security/2016/01/15/13 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0465.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0741.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openssh.com/txt/release-7.2 Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/84427 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1034705 Broken Link, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1298741 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201612-18 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)