National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-1908 Detail

Current 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:  MITRE      Last Modified:  04/11/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2016-1908
Original release date:
04/11/2017
Last revised:
01/04/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
9.8 Critical
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (legend)
Impact Score:
5.9
Exploitability Score:
3.9
CVSS Version 3 Metrics:
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
CVSS Severity (version 2.0):
CVSS v2 Base Score:
7.5 HIGH
Vector:
(AV:N/AC:L/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore:
6.4
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://openwall.com/lists/oss-security/2016/01/15/13 Mailing List; Third Party Advisory External Source MLIST [oss-security] 20160115 Re: Qualys Security Advisory - Roaming through the OpenSSH client: CVE-2016-0777 and CVE-2016-0778
http://rhn.redhat.com/errata/RHSA-2016-0465.html External Source REDHAT RHSA-2016:0465
http://rhn.redhat.com/errata/RHSA-2016-0741.html External Source REDHAT RHSA-2016:0741
http://www.openssh.com/txt/release-7.2 Release Notes; Vendor Advisory External Source CONFIRM http://www.openssh.com/txt/release-7.2
http://www.securityfocus.com/bid/84427 Third Party Advisory; VDB Entry External Source BID 84427
http://www.securitytracker.com/id/1034705 External Source SECTRACK 1034705
https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c Patch External Source CONFIRM https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c
https://bugzilla.redhat.com/show_bug.cgi?id=1298741 Issue Tracking; Patch; Third Party Advisory External Source CONFIRM https://bugzilla.redhat.com/show_bug.cgi?id=1298741
https://security.gentoo.org/glsa/201612-18 External Source GENTOO GLSA-201612-18

Technical Details

Vulnerability Type (View All)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:openbsd:openssh:*:p2:*:*:*:*:*:*    versions up to (including) 7.1

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History 5 change records found - show changes