6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
7 High
AI Score
Confidence
High
0.005 Low
EPSS
Percentile
76.5%
Samba is prone to a man-in-the-middle (MITM) vulnerability.
# SPDX-FileCopyrightText: 2016 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
CPE = "cpe:/a:samba:samba";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.807345");
script_version("2023-07-21T05:05:22+0000");
script_cve_id("CVE-2016-2119");
script_tag(name:"cvss_base", value:"6.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_tag(name:"last_modification", value:"2023-07-21 05:05:22 +0000 (Fri, 21 Jul 2023)");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2022-08-29 20:20:00 +0000 (Mon, 29 Aug 2022)");
script_tag(name:"creation_date", value:"2016-07-12 12:51:22 +0530 (Tue, 12 Jul 2016)");
script_name("Samba 'libcli/smb/smbXcli_base.c' Man In The Middle (MIMA) Vulnerability");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2016 Greenbone AG");
script_family("General");
script_dependencies("smb_nativelanman.nasl", "gb_samba_detect.nasl");
script_mandatory_keys("samba/smb_or_ssh/detected");
script_xref(name:"URL", value:"https://www.samba.org/samba/security/CVE-2016-2119.html");
script_xref(name:"URL", value:"https://access.redhat.com/security/cve/cve-2016-2119");
script_tag(name:"summary", value:"Samba is prone to a man-in-the-middle (MITM) vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The flaw exists in the way DCE/RPC
connections are initiated by the user. Any authenticated DCE/RPC connection
that a client initiates against the server could be use by a man-in-the middle
attacker to impersonate the server by injecting the SMB2_SESSION_FLAG_IS_GUEST
or SMB2_SESSION_FLAG_IS_NULL flag.");
script_tag(name:"impact", value:"Successful exploitation will allow a remote
attacker to bypass a client-signing protection mechanism, and consequently
spoof SMB2 and SMB3 servers.");
script_tag(name:"affected", value:"Samba versions 4.x before 4.2.14,
4.3.x before 4.3.11, and 4.4.x before 4.4.5.");
script_tag(name:"solution", value:"Upgrade to Samba version 4.2.14
or 4.3.11 or 4.4.5 or later.");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"remote_banner_unreliable");
exit(0);
}
include("version_func.inc");
include("host_details.inc");
if( isnull( port = get_app_port( cpe:CPE ) ) ) exit( 0 );
if( ! infos = get_app_version_and_location( cpe:CPE, port:port, exit_no_version:TRUE ) ) exit( 0 );
vers = infos['version'];
loc = infos['location'];
if( version_in_range( version:vers, test_version:"4.0.0", test_version2:"4.2.13" ) ) {
fix = "4.2.14";
VULN = TRUE ;
} else if( version_in_range( version:vers, test_version:"4.3.0", test_version2:"4.3.10" ) ) {
fix = "4.3.11";
VULN = TRUE ;
} else if( version_in_range( version:vers, test_version:"4.4.0", test_version2:"4.4.4" ) ) {
fix = "4.4.5";
VULN = TRUE ;
}
if( VULN ) {
report = report_fixed_ver( installed_version:vers, fixed_version:fix, install_path:loc );
security_message( data:report, port:port );
exit( 0 );
}
exit( 99 );
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
7 High
AI Score
Confidence
High
0.005 Low
EPSS
Percentile
76.5%