CVE-2016-1908
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Red Hat Affected 8 releases
| Version | Status | Fixed in |
|---|---|---|
| 7.7 | Affected | — |
| 7.6 | Affected | — |
| 7.5 | Affected | — |
| 7.4 | Affected | — |
| 7.3 | Affected | — |
| 7.2 | Affected | — |
| 7.0 | Affected | — |
| 6.0 | Affected | — |
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 6 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1:7.2p1-1 |
| sid | Fixed | 1:7.2p1-1 |
| forky | Fixed | 1:7.2p1-1 |
| bullseye | Fixed | 1:7.2p1-1 |
| bookworm | Fixed | 1:7.2p1-1 |
| 8.0 | Affected | — |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| openbsd | openssh | {"endExcluding":"7.2"} | 7.2 |
References
- https://www.suse.com/security/cve/CVE-2016-1908.html
- http://openwall.com/lists/oss-security/2016/01/15/13
- http://rhn.redhat.com/errata/RHSA-2016-0465.html
- http://rhn.redhat.com/errata/RHSA-2016-0741.html
- http://www.openssh.com/txt/release-7.2
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securityfocus.com/bid/84427
- http://www.securitytracker.com/id/1034705
- https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c
- https://bugzilla.redhat.com/show_bug.cgi?id=1298741
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
- https://security.gentoo.org/glsa/201612-18
- https://security-tracker.debian.org/tracker/CVE-2016-1908
CWEs
CWE-287
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.