CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
AI Score
Confidence
Low
EPSS
Percentile
23.6%
Cisco ASA is prone to an encrypted IPSec or IKEv2 modification
vulnerability.
# Copyright (C) 2015 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:/a:cisco:asa";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.106011");
script_version("2022-02-09T09:27:46+0000");
script_tag(name:"last_modification", value:"2022-02-09 09:27:46 +0000 (Wed, 09 Feb 2022)");
script_tag(name:"creation_date", value:"2015-06-23 09:56:22 +0700 (Tue, 23 Jun 2015)");
script_tag(name:"cvss_base", value:"4.3");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
script_tag(name:"qod_type", value:"remote_banner");
script_tag(name:"solution_type", value:"VendorFix");
script_cve_id("CVE-2015-4550");
script_name("Cisco ASA AES-GCM Vulnerability (Cisco-SA-20150616-CVE-2015-4550)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2015 Greenbone Networks GmbH");
script_family("CISCO");
script_dependencies("gb_cisco_asa_version.nasl", "gb_cisco_asa_version_snmp.nasl");
script_mandatory_keys("cisco_asa/version");
script_tag(name:"summary", value:"Cisco ASA is prone to an encrypted IPSec or IKEv2 modification
vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The vulnerability is due to an error on the firmware of the
Cavium Networks cryptographic module. Due to this vulnerability, the integrity check value (ICV)
is not verified. An attacker could exploit this vulnerability by intercepting encrypted packets
in transit and modifying their contents. Such packets would be decrypted by the ASA and then
forwarded to their destination, without the modification being detected.");
script_tag(name:"impact", value:"An unauthenticated, remote attacker could modify the contents of
an encrypted IPSec or IKEv2 packet. A successful exploit could be leveraged to conduct further
attacks.");
script_tag(name:"affected", value:"Cisco ASA version 9.3 and 9.4.");
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-20150616-CVE-2015-4550");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (!version = get_app_version(cpe: CPE, nofork: TRUE))
exit(0);
if (version_in_range_exclusive(version: version, test_version_lo: "9.3", test_version_up: "9.3.3.2")) {
report = report_fixed_ver(installed_version: version, fixed_version: "9.3(3.2)");
security_message(port: 0, data: report);
exit(0);
}
if (version_in_range_exclusive(version: version, test_version_lo: "9.4", test_version_up: "9.4.1.2")) {
report = report_fixed_ver(installed_version: version, fixed_version: "9.4(1.2)");
security_message(port: 0, data: report);
exit(0);
}
exit(99);