CVE-2016-2115

MEDIUM

Canonical Ubuntu Linux - Security Feature Bypass

Title source: rule

Description

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 does not require SMB signing within a DCERPC session over ncacn_np, which allows man-in-the-middle attackers to spoof SMB clients by modifying the client-server data stream.

References (37)

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-0611.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-0612.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-0613.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-0614.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-0618.html

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2950-2

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2950-3

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2950-4

[Vendor Advisory] http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html

[Vendor Advisory] https://h20566.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c05087821

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

[Various Sources] http://badlock.org/

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00020.html

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00021.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-0619.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-0620.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-0624.html

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1035533

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2950-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-2950-5

... and 17 more

Scores

CVSS v3 5.9

EPSS 0.2377

EPSS Percentile 95.9%

Attack Vector NETWORK

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

Classification

CWE

CWE-254

Status draft

Affected Products (50)

canonical/ubuntu_linux

samba/samba

... and 35 more

Timeline

Published Apr 25, 2016

Tracked Since Feb 18, 2026