CVE-2016-2114

MEDIUM

Samba 4.x < 4.2.11, 4.3.x < 4.3.8, 4.4.x < 4.4.2 - Man-in-the-Middle Attack via SMB1 Protocol

Title source: llm

Description

The SMB1 protocol implementation in Samba 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not recognize the "server signing = mandatory" setting, which allows man-in-the-middle attackers to spoof SMB servers by modifying the client-server data stream.

References (25)

Core 25

Core References

Vendor Advisory vendor-advisory x_refsource_slackware

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.458012

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2016-0612.html

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/USN-2950-1

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/86011

Various Sources x_refsource_misc

http://badlock.org/

Patch, Vendor Advisory x_refsource_confirm

https://www.samba.org/samba/security/CVE-2016-2114.html

Vendor Advisory x_refsource_confirm

http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/USN-2950-5

Various Sources x_refsource_confirm

https://www.samba.org/samba/history/samba-4.2.10.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182185.html

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2016-0618.html

Various Sources x_refsource_confirm

https://www.samba.org/samba/latest_news.html#4.4.2

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1035533

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182272.html

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2016-0614.html

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2016-0620.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html

Various Sources x_refsource_confirm

https://bto.bluecoat.com/security-advisory/sa122

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/USN-2950-3

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182288.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html

Third Party Advisory vendor-advisory x_refsource_gentoo

https://security.gentoo.org/glsa/201612-47

Third Party Advisory vendor-advisory x_refsource_debian

http://www.debian.org/security/2016/dsa-3548

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/USN-2950-2

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/USN-2950-4

Scores

CVSS v3 5.9

EPSS 0.0586

EPSS Percentile 90.7%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE

CWE-254

Status published

Products (50)

canonical/ubuntu_linux 14.04

canonical/ubuntu_linux 15.10

canonical/ubuntu_linux 16.04

samba/samba 4.0.0

samba/samba 4.0.1

samba/samba 4.0.2

samba/samba 4.0.3

samba/samba 4.0.4

samba/samba 4.0.5

samba/samba 4.0.6

... and 40 more

Published Apr 25, 2016

Tracked Since Feb 18, 2026