9.8crit
CVE-2016-1908in critical feed
The client in OpenSSH before 7.2 mishandles failed cookie generation for untrusted X11 forwarding and relies on the local X11 server for ac…
Published 9 y ago · modified 4 mo ago · JSON
CVSS
9.8
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
13.7%
percentile 97%
Public exploits
0
none known
Summary
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.
CISA SSVC assessment
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction (EPSS)
13.74% probability of exploitation in the next 30 days, higher than 97% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
- CWE-287 Improper Authentication
References
- openssh.com /txt/release-7.2 · x_transferred
- oracle.com /technetwork/topics/security/linuxbulletinapr2016-2952096.html · x_transferred
- anongit.mindrot.org /openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c · x_transferred
- openwall.com /lists/oss-security/2016/01/15/13 · mailing-list, x_transferred
- securitytracker.com /id/1034705 · vdb-entry, x_transferred
- rhn.redhat.com /errata/RHSA-2016-0741.html · vendor-advisory, x_transferred
- security.gentoo.org /glsa/201612-18 · vendor-advisory, x_transferred
- bugzilla.redhat.com /show_bug.cgi?id=1298741 · x_transferred
- lists.debian.org /debian-lts-announce/2018/09/msg00010.html · mailing-list, x_transferred
- securityfocus.com /bid/84427 · vdb-entry, x_transferred
- rhn.redhat.com /errata/RHSA-2016-0465.html · vendor-advisory, x_transferred
- cert-portal.siemens.com /productcert/pdf/ssa-412672.pdf · x_transferred
Sources
- CVE List: CVE-2016-1908
- NVD: CVE-2016-1908
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