CVE-2016-2118

7.5 HIGH
Published: April 12, 2016 Modified: May 06, 2026
View on NVD

Description

The MS-SAMR and MS-LSAD protocol implementations in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 mishandle DCERPC connections, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data stream, aka "BADLOCK."

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://badlock.org/
Source: secalert@redhat.com
Technical Description Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182185.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182272.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182288.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00020.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00021.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00022.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00023.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00024.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0611.html
Source: secalert@redhat.com
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0612.html
Source: secalert@redhat.com
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0613.html
Source: secalert@redhat.com
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0614.html
Source: secalert@redhat.com
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0618.html
Source: secalert@redhat.com
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0619.html
Source: secalert@redhat.com
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0620.html
Source: secalert@redhat.com
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0621.html
Source: secalert@redhat.com
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0623.html
Source: secalert@redhat.com
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0624.html
Source: secalert@redhat.com
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0625.html
Source: secalert@redhat.com
Third Party Advisory
http://www.debian.org/security/2016/dsa-3548
Source: secalert@redhat.com
Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
Source: secalert@redhat.com
Third Party Advisory
http://www.securityfocus.com/bid/86002
Source: secalert@redhat.com
Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1035533
Source: secalert@redhat.com
Third Party Advisory VDB Entry
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.458012
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://www.ubuntu.com/usn/USN-2950-1
Source: secalert@redhat.com
Third Party Advisory
http://www.ubuntu.com/usn/USN-2950-2
Source: secalert@redhat.com
Third Party Advisory
http://www.ubuntu.com/usn/USN-2950-3
Source: secalert@redhat.com
Third Party Advisory
http://www.ubuntu.com/usn/USN-2950-4
Source: secalert@redhat.com
Third Party Advisory
http://www.ubuntu.com/usn/USN-2950-5
Source: secalert@redhat.com
Third Party Advisory
https://access.redhat.com/security/vulnerabilities/badlock
Source: secalert@redhat.com
Third Party Advisory
https://bto.bluecoat.com/security-advisory/sa122
Source: secalert@redhat.com
Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05162399
Source: secalert@redhat.com
Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05166182
Source: secalert@redhat.com
Third Party Advisory
https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes
Source: secalert@redhat.com
Third Party Advisory
https://kb.netapp.com/support/s/article/ka51A0000008SXzQAM/smb-vulnerabilities-in-multiple-netapp-products
Source: secalert@redhat.com
Third Party Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40196
Source: secalert@redhat.com
Third Party Advisory
https://security.gentoo.org/glsa/201612-47
Source: secalert@redhat.com
Third Party Advisory
https://www.kb.cert.org/vuls/id/813296
Source: secalert@redhat.com
Third Party Advisory US Government Resource
https://www.samba.org/samba/history/samba-4.2.10.html
Source: secalert@redhat.com
Third Party Advisory
https://www.samba.org/samba/latest_news.html#4.4.2
Source: secalert@redhat.com
Vendor Advisory
https://www.samba.org/samba/security/CVE-2016-2118.html
Source: secalert@redhat.com
Vendor Advisory
http://badlock.org/
Source: af854a3a-2127-422b-91ae-364da2661108
Technical Description Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182185.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182272.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182288.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00020.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00021.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00022.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00023.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00024.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0611.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0612.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0613.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0614.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0618.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0619.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0620.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0621.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0623.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0624.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0625.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.debian.org/security/2016/dsa-3548
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.securityfocus.com/bid/86002
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1035533
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.458012
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://www.ubuntu.com/usn/USN-2950-1
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.ubuntu.com/usn/USN-2950-2
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.ubuntu.com/usn/USN-2950-3
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.ubuntu.com/usn/USN-2950-4
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.ubuntu.com/usn/USN-2950-5
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://access.redhat.com/security/vulnerabilities/badlock
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://bto.bluecoat.com/security-advisory/sa122
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05162399
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05166182
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://kb.netapp.com/support/s/article/ka51A0000008SXzQAM/smb-vulnerabilities-in-multiple-netapp-products
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40196
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://security.gentoo.org/glsa/201612-47
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.kb.cert.org/vuls/id/813296
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory US Government Resource
https://www.samba.org/samba/history/samba-4.2.10.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.samba.org/samba/latest_news.html#4.4.2
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://www.samba.org/samba/security/CVE-2016-2118.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

90 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
78.5%
99th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-254

Affected Vendors

samba canonical debian

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