Cisco Email Security Appliance Advanced Malware Protection Attachment Scanning Denial of Service 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("1.3.6.1.4.1.25623.1.0.140028");
  script_cve_id("CVE-2016-1486");
  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_version("2025-12-19T15:41:09+0000");

  script_name("Cisco Email Security Appliance Advanced Malware Protection Attachment Scanning Denial of Service Vulnerability");

  script_xref(name:"URL", value:"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161026-esa2");

  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 email attachment scanning functionality of the Advanced Malware Protection
  (AMP) feature of Cisco AsyncOS Software for Cisco Email Security Appliances could allow an
  unauthenticated, remote attacker to cause an affected device to stop scanning and forwarding email
  messages due to a denial of service (DoS) condition.

  The vulnerability is due to improper handling of UU-encoded files that are attached to an email
  message. An attacker could exploit this vulnerability by sending a crafted email message with a UU-
  encoded file attachment through an affected device. The scanning of the attachment could cause the
  mail handling process of the affected software to restart, resulting in a DoS condition. After the
  mail handling process restarts, the software resumes scanning for the same attachment, which could
  cause the mail handling process to restart again. A successful exploit could allow the attacker to
  cause a repeated DoS condition.

  Cisco has released software updates that address this vulnerability. There are no workarounds that
  address this vulnerability.");

  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:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-07-29 01:34:00 +0000 (Sat, 29 Jul 2017)");
  script_tag(name:"creation_date", value:"2016-10-27 14:13:14 +0200 (Thu, 27 Oct 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(
  '8.5.0-000',
  '8.5.0-ER1-198',
  '8.5.6-052',
  '8.5.6-073',
  '8.5.6-074',
  '8.5.6-106',
  '8.5.6-113',
  '8.5.7-042',
  '8.6.0',
  '8.6.0-011',
  '8.9.0',
  '8.9.1-000',
  '8.9.2-032',
  '9.0.0',
  '9.0.0-212',
  '9.0.0-461',
  '9.0.5-000',
  '9.1.0',
  '9.1.0-011',
  '9.1.0-101',
  '9.1.0-032',
  '9.1.1-000',
  '9.4.0',
  '9.4.4-000',
  '9.5.0-000',
  '9.5.0-201',
  '9.6.0-000',
  '9.6.0-042',
  '9.6.0-051',
  '9.7.0-125' );

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 );