Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2016-2110

Severity CVSS v4.0:
Pending analysis
Type:
CWE-254 Security Features
Publication date:
25/04/2016
Last modified:
12/04/2025

Description

The NTLMSSP authentication implementation 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 allows man-in-the-middle attackers to perform protocol-downgrade attacks by modifying the client-server data stream to remove application-layer flags or encryption settings, as demonstrated by clearing the NTLMSSP_NEGOTIATE_SEAL or NTLMSSP_NEGOTIATE_SIGN option to disrupt LDAP security.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.90 MEDIUM
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

Base Score 3.x
5.90
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:samba:samba:3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.2:a:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.2a:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.4:rc1:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.5:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.6:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.7:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.8:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.9:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.10:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.11:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools