CVE-2016-1908
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Openbsd Openssh
PublishedApr 11, 2017
First seenApr 11, 2017
Weakness typeCWE-287Improper authentication
How to fix
Update
- openbsd openssh7.2 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openbsd openssh | v < 7.2 | 7.2 |
| debian debian_linux | 8.0 | — |
| oracle linux | 6, 7 | — |
| redhat enterprise_linux_desktop | 6.0, 7.0 | — |
| redhat enterprise_linux_eus | 7.2, 7.3, 7.4, 7.5, 7.6, 7.7 | — |
| redhat enterprise_linux_server | 6.0, 7.0 | — |
| redhat enterprise_linux_server_aus | 7.2, 7.3, 7.4, 7.6, 7.7 | — |
| redhat enterprise_linux_server_tus | 7.2, 7.3, 7.6, 7.7 | — |
| redhat enterprise_linux_workstation | 6.0, 7.0 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.