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
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
AI Score
Confidence
High
EPSS
Percentile
68.4%
A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner
of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote
attacker to bypass configured user filters on the device.
# 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:email_security_appliance";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.106594");
script_cve_id("CVE-2017-3827");
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 AsyncOS Software for Cisco ESA Filtering Bypass Vulnerability");
script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170215-asyncos");
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 Multipurpose Internet Mail Extensions (MIME) scanner
of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote
attacker to bypass configured user filters on the device.");
script_tag(name:"insight", value:"The vulnerability is due to improper error handling of a malformed MIME
header in an email attachment. An attacker could exploit this vulnerability by sending an email with a crafted
MIME attachment.");
script_tag(name:"impact", value:"A successful exploit could allow the attacker to bypass user filters
configured to prevent executable files from being opened. The malformed MIME headers may not be RFC compliant but
some mail clients could still allow users to access the attachment, which may not have been properly filtered by
the device.");
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:"2017-07-25 01:29:00 +0000 (Tue, 25 Jul 2017)");
script_tag(name:"creation_date", value:"2017-02-16 11:47:47 +0700 (Thu, 16 Feb 2017)");
script_category(ACT_GATHER_INFO);
script_family("CISCO");
script_copyright("Copyright (C) 2017 Greenbone AG");
script_dependencies("gb_cisco_esa_version.nasl");
script_mandatory_keys("cisco_esa/installed");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (!version = get_app_version(cpe:CPE))
exit(0);
affected = make_list(
'10.0.0-082',
'10.0.0-124',
'10.0.0-125',
'10.0.0-203',
'10.0.0-232',
'9.9.6-026',
'9.9.9-894');
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);
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
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
AI Score
Confidence
High
EPSS
Percentile
68.4%