Cisco Web Security Appliance Authenticated Command Injection and Privilege Escalation Vulnerability

# 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("1.3.6.1.4.1.25623.1.0.106972");
  script_cve_id("CVE-2017-6748");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_version("2023-07-25T05:05:58+0000");

  script_name("Cisco Web Security Appliance Authenticated Command Injection and Privilege Escalation Vulnerability");

  script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170719-wsa2");

  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 CLI parser of the Cisco Web Security Appliance (WSA)
could allow an authenticated, local attacker to perform command injection and elevate privileges to root. The
attacker must authenticate with valid operator-level or administrator-level credentials.");

  script_tag(name:"insight", value:"The vulnerability is due to insufficient validation of user-supplied input in
the CLI parser. An attacker could exploit this vulnerability by authenticating to the affected device and
performing command injection over the CLI.");

  script_tag(name:"impact", value:"An exploit could allow the attacker to escape from the CLI subshell and
execute system-level commands on the underlying operating system as root.");

  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:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");
  script_tag(name:"creation_date", value:"2017-07-20 14:18:58 +0700 (Thu, 20 Jul 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(
  '10.0.0-232',
  '10.0.0-233',
  '10.1.0',
  '10.1.0-204',
  '10.1.1-230',
  '10.5.0',
  '10.5.0-358',
  '11.0.0',
  '11.0.0-613');

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);