CVE-2016-1908
9.8 CRITICALThe client in OpenSSH before 7.2 mishandles failed cookie generation for untrusted X11 forwarding and relies on the local X11 server for ...
Published: 2017-04-11 · Last updated: 2026-05-29
Severity and scoring
- CVSS
- 9.8 CRITICAL
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-287
Affected products
| Vendor | Product |
|---|---|
| debian | debian_linux, enterprise_linux_desktop, enterprise_linux_eus |
| openbsd | debian_linux, enterprise_linux_desktop, enterprise_linux_eus |
| oracle | debian_linux, enterprise_linux_desktop, enterprise_linux_eus |
| redhat | debian_linux, enterprise_linux_desktop, enterprise_linux_eus |
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2016-1908
- [Other]http://openwall.com/lists/oss-security/2016/01/15/13
- [Other]http://rhn.redhat.com/errata/RHSA-2016-0465.html
- [Other]http://rhn.redhat.com/errata/RHSA-2016-0741.html
- [Vendor advisory]http://www.openssh.com/txt/release-7.2
- [Other]http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- [Other]http://www.securityfocus.com/bid/84427
- [Other]http://www.securitytracker.com/id/1034705
- [Patch]https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c
- [Patch]https://bugzilla.redhat.com/show_bug.cgi?id=1298741
- [Other]https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- [Other]https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
- [Other]https://security.gentoo.org/glsa/201612-18
- [Other]http://openwall.com/lists/oss-security/2016/01/15/13
- [Other]http://rhn.redhat.com/errata/RHSA-2016-0465.html
- [Other]http://rhn.redhat.com/errata/RHSA-2016-0741.html
- [Vendor advisory]http://www.openssh.com/txt/release-7.2
- [Other]http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- [Other]http://www.securityfocus.com/bid/84427
- [Other]http://www.securitytracker.com/id/1034705
- [Patch]https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c
- [Patch]https://bugzilla.redhat.com/show_bug.cgi?id=1298741
- [Other]https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- [Other]https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
- [Other]https://security.gentoo.org/glsa/201612-18
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