Cisco Email Security Appliance Content Filter Bypass Vulnerability

# SPDX-FileCopyrightText: 2016 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("1.3.6.1.4.1.25623.1.0.106457");
  script_cve_id("CVE-2016-6465");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_version("2025-12-19T15:41:09+0000");

  script_name("Cisco Email Security Appliance Content Filter Bypass Vulnerability");

  script_xref(name:"URL", value:"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161207-esa");

  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 content filtering functionality of Cisco AsyncOS
Software for Cisco Email Security Appliances could allow an unauthenticated, remote attacker to bypass user
filters that are configured for an affected device.");

  script_tag(name:"insight", value:"The vulnerability is due to improper filtering of certain TAR format files
that are attached to email messages. An attacker could exploit this vulnerability by sending an email message
that has a crafted TAR file attachment through an affected device.");

  script_tag(name:"impact", value:"A successful exploit could allow the attacker to bypass user filters that
are configured for the device.");

  script_tag(name:"qod_type", value:"package");
  script_tag(name:"solution_type", value:"VendorFix");

  script_tag(name:"last_modification", value:"2025-12-19 15:41:09 +0000 (Fri, 19 Dec 2025)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-01-05 13:41:00 +0000 (Thu, 05 Jan 2017)");
  script_tag(name:"creation_date", value:"2016-12-08 11:24:12 +0700 (Thu, 08 Dec 2016)");
  script_category(ACT_GATHER_INFO);
  script_family("CISCO");
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_dependencies("gb_cisco_esa_consolidation.nasl");
  script_mandatory_keys("cisco/esa/detected");
  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if( ! version = get_app_version( cpe:CPE ) ) exit( 0 );

affected = make_list(
  '8.5.7-042',
  '9.7.2-047',
  '10.0.0-125',
  '10.0.0-232' );

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 );