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CVE-2016-2118

HIGH
7.5
CVSS Score
Published: April 12, 2016 at 11:00 PM UTC
Updated: June 17, 2026 at 12:43 AM UTC
3 products affected across 3 vendorsDebian LinuxUbuntu LinuxSAMBA

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Severity
HIGH7.5
Exploit prediction
EPSS 37%

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."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux· Canonicalrubygems
95%
12.0414.0415.1016.04
Debian Linux· Debiandrupal
95%
7.08.0
SAMBA· Samba
95%
3.6.0 ≤ v < 4.2.104.3.0 ≤ v < 4.3.74.4.0 ≤ v < 4.4.1
Affected range stops below 4.2.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.3.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.1, so it looks safe — our inference, not a vendor statement

References (45)

x_refsource_MISCTechnical DescriptionThird Party Advisory
Source: [email protected]
http://badlock.org/
Vendor Advisoryx_refsource_FEDORAMailing ListThird Party Advisory
Source: [email protected]
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182185.html
Vendor Advisoryx_refsource_FEDORAMailing ListThird Party Advisory
Source: [email protected]
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182272.html
Vendor Advisoryx_refsource_FEDORAMailing ListThird Party Advisory
Source: [email protected]
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182288.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00020.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00021.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00022.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00023.html

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-254

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