CVE-2016-1908
- State
- Published
- Severity
- 9.8 Critical
- Published
- Apr 11, 2017
- Updated
- May 29, 2026
- Reserved
- Jan 15, 2016
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-287 Improper Authentication
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- http://www.openssh.com/txt/release-7.2
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c
- [oss-security] 20160115 Re: Qualys Security Advisory - Roaming through the OpenSSH client: CVE-2016-0777 and CVE-2016-0778mailing-list
- 1034705vdb-entry
- RHSA-2016:0741vendor-advisory
- GLSA-201612-18vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1298741
- [debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security updatemailing-list
- 84427vdb-entry
- RHSA-2016:0465vendor-advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
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