Vulnerability Details : CVE-2016-2119
libcli/smb/smbXcli_base.c in Samba 4.x before 4.2.14, 4.3.x before 4.3.11, and 4.4.x before 4.4.5 allows man-in-the-middle attackers to bypass a client-signing protection mechanism, and consequently spoof SMB2 and SMB3 servers, via the (1) SMB2_SESSION_FLAG_IS_GUEST or (2) SMB2_SESSION_FLAG_IS_NULL flag.
Exploit prediction scoring system (EPSS) score for CVE-2016-2119
Probability of exploitation activity in the next 30 days: 0.50%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 76 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2016-2119
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.6
|
5.9
|
NIST |
CWE ids for CVE-2016-2119
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The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-2119
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http://www.securityfocus.com/bid/91700
Samba CVE-2016-2119 Man in the Middle Security Bypass VulnerabilityThird Party Advisory;VDB Entry
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https://security.gentoo.org/glsa/201805-07
Samba: Multiple vulnerabilities (GLSA 201805-07) — Gentoo securityThird Party Advisory
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http://lists.opensuse.org/opensuse-updates/2016-07/msg00060.html
openSUSE-SU-2016:1830-1: moderate: Security update for sambaMailing List;Third Party Advisory
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http://rhn.redhat.com/errata/RHSA-2016-1486.html
RHSA-2016:1486 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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http://www.securitytracker.com/id/1036244
Samba Lets Remote Users Downgrade SMB Signing Security Protections on the Target System - SecurityTrackerThird Party Advisory;VDB Entry
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http://rhn.redhat.com/errata/RHSA-2016-1494.html
RHSA-2016:1494 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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https://www.samba.org/samba/security/CVE-2016-2119.html
Samba - Security Announcement ArchiveVendor Advisory
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http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
Oracle Linux Bulletin - July 2016Third Party Advisory
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http://rhn.redhat.com/errata/RHSA-2016-1487.html
RHSA-2016:1487 - Security Advisory - Red Hat Customer PortalThird Party Advisory
Products affected by CVE-2016-2119
- cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*