CVE-2016-1908

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/11/2017

Last Modified4/20/2025

Sourcenvd

Honeypot Sightings0

Affected Products

debian:debian_linuxopenbsd:opensshoracle:linuxredhat:enterprise_linux_desktopredhat:enterprise_linux_eusredhat:enterprise_linux_serverredhat:enterprise_linux_server_ausredhat:enterprise_linux_server_tusredhat:enterprise_linux_workstation

Weaknesses (CWE)

CWE-287

References

http://openwall.com/lists/oss-security/2016/01/15/13(secalert@redhat.com)

http://rhn.redhat.com/errata/RHSA-2016-0465.html(secalert@redhat.com)

http://rhn.redhat.com/errata/RHSA-2016-0741.html(secalert@redhat.com)

http://www.openssh.com/txt/release-7.2(secalert@redhat.com)

http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html(secalert@redhat.com)

http://www.securityfocus.com/bid/84427(secalert@redhat.com)

http://www.securitytracker.com/id/1034705(secalert@redhat.com)

https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=1298741(secalert@redhat.com)

https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf(secalert@redhat.com)

https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html(secalert@redhat.com)

https://security.gentoo.org/glsa/201612-18(secalert@redhat.com)

http://openwall.com/lists/oss-security/2016/01/15/13(af854a3a-2127-422b-91ae-364da2661108)

http://rhn.redhat.com/errata/RHSA-2016-0465.html(af854a3a-2127-422b-91ae-364da2661108)

http://rhn.redhat.com/errata/RHSA-2016-0741.html(af854a3a-2127-422b-91ae-364da2661108)

http://www.openssh.com/txt/release-7.2(af854a3a-2127-422b-91ae-364da2661108)

http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html(af854a3a-2127-422b-91ae-364da2661108)

http://www.securityfocus.com/bid/84427(af854a3a-2127-422b-91ae-364da2661108)

http://www.securitytracker.com/id/1034705(af854a3a-2127-422b-91ae-364da2661108)

https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c(af854a3a-2127-422b-91ae-364da2661108)

https://bugzilla.redhat.com/show_bug.cgi?id=1298741(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(af854a3a-2127-422b-91ae-364da2661108)

https://security.gentoo.org/glsa/201612-18(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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