5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
5.8 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
5.7 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
51.0%
A vulnerability in the URL filtering feature of Cisco AsyncOS Software for
Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass a configured URL
filter rule.
# SPDX-FileCopyrightText: 2017 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:/h:cisco:web_security_appliance";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.106663");
script_cve_id("CVE-2017-3870");
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:P/A:N");
script_version("2023-07-25T05:05:58+0000");
script_name("Cisco Web Security Appliance URL Filtering Bypass Vulnerability");
script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-wsa");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");
script_tag(name:"summary", value:"A vulnerability in the URL filtering feature of Cisco AsyncOS Software for
Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass a configured URL
filter rule.");
script_tag(name:"insight", value:"The vulnerability is due to incomplete validation of the HTTP request. An
attacker could exploit this vulnerability by sending a crafted HTTP request through the targeted device.");
script_tag(name:"impact", value:"An exploit could allow the attacker to bypass a configured URL filter.");
script_tag(name:"qod_type", value:"package");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"last_modification", value:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2017-07-12 01:29:00 +0000 (Wed, 12 Jul 2017)");
script_tag(name:"creation_date", value:"2017-03-16 12:35:31 +0700 (Thu, 16 Mar 2017)");
script_category(ACT_GATHER_INFO);
script_family("CISCO");
script_copyright("Copyright (C) 2017 Greenbone AG");
script_dependencies("gb_cisco_wsa_version.nasl");
script_mandatory_keys("cisco_wsa/installed");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (!version = get_app_version(cpe:CPE))
exit(0);
affected = make_list(
'8.5.3-069',
'9.1.1-074',
'9.1.2-010');
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);
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
5.8 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
5.7 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
51.0%