6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.8 Medium
AI Score
Confidence
High
0.105 Low
EPSS
Percentile
95.0%
On July 9, 2015, the OpenSSL Project released a security
advisory detailing a vulnerability affecting applications that verify certificates, including
SSL/Transport Layer Security (TLS)/Datagram Transport Layer Security (DTLS) clients and
SSL/TLS/DTLS servers using client authentication.
# Copyright (C) 2016 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
CPE = "cpe:/o:cisco:nx-os";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.105691");
script_version("2022-12-26T10:12:01+0000");
script_tag(name:"last_modification", value:"2022-12-26 10:12:01 +0000 (Mon, 26 Dec 2022)");
script_tag(name:"creation_date", value:"2016-05-12 14:26:49 +0200 (Thu, 12 May 2016)");
script_tag(name:"cvss_base", value:"6.4");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:N");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2018-11-30 21:30:00 +0000 (Fri, 30 Nov 2018)");
script_cve_id("CVE-2015-1793");
script_tag(name:"qod_type", value:"remote_banner");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Cisco NX-OS: OpenSSL Alternative Chains Certificate Forgery Vulnerability (July 2015) Affecting Cisco Products (cisco-sa-20150710-openssl)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2016 Greenbone Networks GmbH");
script_family("CISCO");
script_dependencies("gb_cisco_nx_os_consolidation.nasl");
script_mandatory_keys("cisco/nx_os/detected", "cisco/nx_os/device", "cisco/nx_os/model");
script_tag(name:"summary", value:"On July 9, 2015, the OpenSSL Project released a security
advisory detailing a vulnerability affecting applications that verify certificates, including
SSL/Transport Layer Security (TLS)/Datagram Transport Layer Security (DTLS) clients and
SSL/TLS/DTLS servers using client authentication.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"Multiple Cisco products incorporate a version of the OpenSSL
package affected by this vulnerability that could allow an unauthenticated, remote attacker to
cause certain checks on untrusted certificates to be bypassed, enabling the attacker to forge
'trusted' certificates that could be used to conduct man-in-the-middle attacks.");
script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");
script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150710-openssl");
script_xref(name:"URL", value:"http://tools.cisco.com/security/center/viewAlert.x?alertId=39851");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if( ! device = get_kb_item( "cisco/nx_os/device" ) )
exit( 0 );
if( "Nexus" >!< device )
exit( 0 );
if ( ! nx_model = get_kb_item( "cisco/nx_os/model" ) )
exit( 0 );
if( ! version = get_app_version( cpe:CPE, nofork:TRUE ) )
exit( 0 );
if( "1000V" >< nx_model ) {
affected = make_list(
"4.0(4)SV1(1)",
"4.0(4)SV1(2)",
"4.0(4)SV1(3)",
"4.0(4)SV1(3a)",
"4.0(4)SV1(3b)",
"4.0(4)SV1(3c)",
"4.0(4)SV1(3d)",
"4.2(1)SV1(4)",
"4.2(1)SV1(4a)",
"4.2(1)SV1(4b)",
"4.2(1)SV1(5.1)",
"4.2(1)SV1(5.1a)",
"4.2(1)SV1(5.2)",
"4.2(1)SV1(5.2b)",
"4.2(1)SV2(1.1)",
"4.2(1)SV2(1.1a)",
"4.2(1)SV2(2.1)",
"5.2(1)SV3(1.1)",
"4.2(1)SV2(2.1a)"
);
}
if( nx_model =~ "^C?3[0-9]+" ) {
affected = make_list(
"5.0(3)U1(1)",
"5.0(3)U1(1a)",
"5.0(3)U1(1b)",
"5.0(3)U1(1d)",
"5.0(3)U1(2)",
"5.0(3)U1(2a)",
"5.0(3)U2(1)",
"5.0(3)U2(2)",
"5.0(3)U2(2a)",
"5.0(3)U2(2b)",
"5.0(3)U2(2c)",
"5.0(3)U2(2d)",
"5.0(3)U3(1)",
"5.0(3)U3(2)",
"5.0(3)U3(2a)",
"5.0(3)U3(2b)",
"5.0(3)U4(1)",
"5.0(3)U5(1)",
"5.0(3)U5(1a)",
"5.0(3)U5(1b)",
"5.0(3)U5(1c)",
"5.0(3)U5(1d)",
"5.0(3)U5(1e)",
"5.0(3)U5(1f)",
"5.0(3)U5(1g)",
"5.0(3)U5(1h)",
"6.0(2)U1(1)",
"6.0(2)U1(1a)",
"6.0(2)U1(2)",
"6.0(2)U1(3)",
"6.0(2)U1(4)",
"6.0(2)U2(1)",
"6.0(2)U2(2)",
"6.0(2)U2(3)",
"6.0(2)U2(4)",
"6.0(2)U2(5)",
"6.0(2)U2(6)",
"6.0(2)U3(1)",
"6.0(2)U3(2)",
"6.0(2)U3(3)",
"6.0(2)U3(4)",
"6.0(2)U3(5)",
"6.0(2)U4(1)",
"6.0(2)U4(2)",
"6.0(2)U4(3)",
"6.0(2)U5(1)"
);
}
if( nx_model =~ "^C?4[0-9]+" ) {
affected = make_list(
"4.1(2)E1(1)",
"4.1(2)E1(1b)",
"4.1(2)E1(1d)",
"4.1(2)E1(1e)",
"4.1(2)E1(1f)",
"4.1(2)E1(1g)",
"4.1(2)E1(1h)",
"4.1(2)E1(1i)",
"4.1(2)E1(1j)"
);
}
if( nx_model =~ "^C?5[0-9]+" ) {
affected = make_list(
"4.0(0)N1(1a)",
"4.0(0)N1(2)",
"4.0(0)N1(2a)",
"4.0(1a)N1(1)",
"4.0(1a)N1(1a)",
"4.0(1a)N2(1)",
"4.0(1a)N2(1a)",
"4.1(3)N1(1)",
"4.1(3)N1(1a)",
"4.1(3)N2(1)",
"4.1(3)N2(1a)",
"4.2(1)N1(1)",
"4.2(1)N2(1)",
"4.2(1)N2(1a)",
"5.0(2)N1(1)",
"5.0(2)N2(1)",
"5.0(2)N2(1a)",
"5.0(3)N1(1c)",
"5.0(3)N2(1)",
"5.0(3)N2(2)",
"5.0(3)N2(2a)",
"5.0(3)N2(2b)",
"5.1(3)N1(1)",
"5.1(3)N1(1a)",
"5.1(3)N2(1)",
"5.1(3)N2(1a)",
"5.1(3)N2(1b)",
"5.1(3)N2(1c)",
"5.2(1)N1(1)",
"5.2(1)N1(1a)",
"5.2(1)N1(1b)",
"5.2(1)N1(2)",
"5.2(1)N1(2a)",
"5.2(1)N1(3)",
"5.2(1)N1(4)",
"5.2(1)N1(5)",
"5.2(1)N1(6)",
"5.2(1)N1(7)",
"5.2(1)N1(8)",
"5.2(1)N1(8a)",
"6.0(2)N1(1)",
"6.0(2)N1(2)",
"6.0(2)N1(2a)",
"6.0(2)N2(1)",
"6.0(2)N2(1b)",
"6.0(2)N2(2)",
"6.0(2)N2(3)",
"6.0(2)N2(4)",
"6.0(2)N2(5)",
"7.0(0)N1(1)",
"7.0(1)N1(1)",
"7.0(2)N1(1)",
"7.0(3)N1(1)"
);
}
if( nx_model =~ "^C?6[0-9]+" ) {
affected = make_list(
"6.0(2)N1(2)",
"6.0(2)N1(2a)",
"6.0(2)N2(1)",
"6.0(2)N2(1b)",
"6.0(2)N2(2)",
"6.0(2)N2(3)",
"6.0(2)N2(4)",
"6.0(2)N2(5)",
"7.0(0)N1(1)",
"7.0(1)N1(1)",
"7.0(2)N1(1)",
"7.0(3)N1(1)"
);
}
if( nx_model =~ "^C?7[0-9]+" ) {
affected = make_list(
"4.1.(2)",
"4.1.(3)",
"4.1.(4)",
"4.1.(5)",
"4.2(3)",
"4.2(4)",
"4.2(6)",
"4.2(8)",
"4.2.(2a)",
"5.0(2a)",
"5.0(3)",
"5.0(5)",
"5.1(1)",
"5.1(1a)",
"5.1(3)",
"5.1(4)",
"5.1(5)",
"5.1(6)",
"5.2(1)",
"5.2(3a)",
"5.2(4)",
"5.2(5)",
"5.2(7)",
"5.2(9)",
"6.0(1)",
"6.0(2)",
"6.0(3)",
"6.0(4)",
"6.1(1)",
"6.1(2)",
"6.1(3)",
"6.1(4)",
"6.1(4a)",
"6.2(10)",
"6.2(2)",
"6.2(2a)",
"6.2(6)",
"6.2(6b)",
"6.2(8)",
"6.2(8a)",
"6.2(8b)"
);
}
if( nx_model =~ "^C?9[0-9]{3}" ) {
affected = make_list(
"11.0(1b)",
"11.0(1c)",
"6.1(2)I2(1)",
"6.1(2)I2(2)",
"6.1(2)I2(2a)",
"6.1(2)I2(2b)",
"6.1(2)I2(3)",
"6.1(2)I3(1)",
"6.1(2)I3(2)",
"6.1(2)I3(3)"
);
}
foreach af ( affected ) {
if( version == af ) {
report = report_fixed_ver( installed_version:version, fixed_version:"See advisory" );
security_message( port:0, data:report );
exit( 0 );
}
}
exit( 99 );
6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.8 Medium
AI Score
Confidence
High
0.105 Low
EPSS
Percentile
95.0%