7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.006 Low
EPSS
Percentile
77.8%
A vulnerability in the driver processing functions of Cisco IOS
XR Software for Cisco ASR 9001 Aggregation Services Routers could allow an unauthenticated,
remote attacker to cause a memory leak on the route processor (RP) of an affected device, which
could cause the device to drop all control-plane protocols and lead to a denial of service
condition (DoS) on a targeted system.
# 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:ios_xr";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.106177");
script_version("2022-09-23T10:10:45+0000");
script_tag(name:"last_modification", value:"2022-09-23 10:10:45 +0000 (Fri, 23 Sep 2022)");
script_tag(name:"creation_date", value:"2016-08-16 08:52:29 +0700 (Tue, 16 Aug 2016)");
script_tag(name:"cvss_base", value:"7.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2016-11-28 20:31:00 +0000 (Mon, 28 Nov 2016)");
script_cve_id("CVE-2016-6355");
script_tag(name:"qod", value:"30");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Cisco IOS XR Software for Cisco ASR 9001 Aggregation Services Routers Fragmented Packet Denial of Service Vulnerability (cisco-sa-20160810-iosxr)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2016 Greenbone Networks GmbH");
script_family("CISCO");
script_dependencies("gb_cisco_ios_xr_consolidation.nasl");
script_mandatory_keys("cisco/ios_xr/detected", "cisco/ios_xr/model");
script_tag(name:"summary", value:"A vulnerability in the driver processing functions of Cisco IOS
XR Software for Cisco ASR 9001 Aggregation Services Routers could allow an unauthenticated,
remote attacker to cause a memory leak on the route processor (RP) of an affected device, which
could cause the device to drop all control-plane protocols and lead to a denial of service
condition (DoS) on a targeted system.");
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 improper handling of crafted,
fragmented packets that are directed to an affected device. An attacker could exploit this
vulnerability by sending crafted, fragmented packets to an affected device for processing and
reassembly.");
script_tag(name:"impact", value:"A successful exploit could allow the attacker to cause a memory
leak on the RP of the device, which could cause the device to drop all control-plane protocols
and eventually lead to a DoS condition on the targeted system.");
script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");
script_xref(name:"URL", value:"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160810-iosxr");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (!model = get_kb_item("cisco/ios_xr/model"))
exit(0);
if ("ASR9K" >!< model)
exit(0);
if (!version = get_app_version(cpe: CPE, nofork: TRUE))
exit(0);
affected = make_list(
'5.1.0',
'5.1.1',
'5.1.2',
'5.1.1.K9SEC',
'5.1.3',
'5.2.0',
'5.2.1',
'5.2.2',
'5.2.4',
'5.2.3',
'5.2.5',
'5.3.0',
'5.3.1',
'5.3.2' );
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);
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.006 Low
EPSS
Percentile
77.8%