VICIdial Remote OS Command Execution Vulnerability (May 2017) - Active Check

# 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:/a:vicidial:vicidial";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106838");
  script_version("2025-07-16T05:43:53+0000");
  script_tag(name:"last_modification", value:"2025-07-16 05:43:53 +0000 (Wed, 16 Jul 2025)");
  script_tag(name:"creation_date", value:"2017-05-30 10:12:02 +0700 (Tue, 30 May 2017)");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");

  script_cve_id("CVE-2025-34099");

  script_tag(name:"qod_type", value:"remote_analysis");

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

  script_name("VICIdial Remote OS Command Execution Vulnerability (May 2017) - Active Check");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_vicidial_http_detect.nasl");
  script_mandatory_keys("vicidial/http/detected");
  script_require_ports("Services/www", 443);

  script_tag(name:"summary", value:"VICIdial is prone to a remote OS command execution
  vulnerability.");

  script_tag(name:"vuldetect", value:"Sends a crafted HTTP request and checks if input filtering is
  not patched and if password encryption is supported which indicates that the server is
  vulnerable.");

  script_tag(name:"insight", value:"VICIdial allows unauthenticated users to execute arbitrary
  operating system commands as the web server user if password encryption is enabled (disabled by
  default).");

  script_tag(name:"impact", value:"An unauthenticated attacker may execute arbitrary OS commands as
  the web server.");

  script_tag(name:"affected", value:"VICIdial versions 2.9 RC1 through 2.13 RC1 if password
  encryption is enabled (disabled by default).");

  script_tag(name:"solution", value:"See the referenced link for a solution.");

  script_xref(name:"URL", value:"http://www.vicidial.org/VICIDIALmantis/view.php?id=1016");
  script_xref(name:"URL", value:"https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/vicidial_user_authorization_unauth_cmd_exec.rb");
  script_xref(name:"URL", value:"https://vulncheck.com/advisories/vicidial-unauth-command-injection");

  exit(0);
}

include("host_details.inc");
include("http_func.inc");
include("http_keepalive.inc");
include("misc_func.inc");

if (!port = get_app_port(cpe: CPE, service: "www"))
  exit(0);

if (!get_app_location(cpe: CPE, port: port, nofork: TRUE))
  exit(0);

user = rand_str(length: 10, charset: "ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz");
pass = "#" + rand_str(length: 10, charset: "ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz") + "&#";
userpass = user + ":" + pass;
userpass64 = base64(str: userpass);
authstr = "Basic " + userpass64;

req = http_get_req(port: port, url: "/vicidial/vicidial_sales_viewer.php",
                   add_headers: make_array("Authorization", authstr));
res = http_keepalive_send_recv(port: port, data: req);

if (!eregmatch(pattern: "\|" + user + "\|" + pass + "\|BAD\|", string: res))
  exit(99);

if (http_vuln_check(port: port, url: "/agc/bp.pl", pattern: "Bcrypt password hashing script",
                    check_header: TRUE)) {
  report = 'Result of the check:\nInput filtering is not patched and password encryption is supported. ' +
           'Which indicates that the server is vulnerable if password encryption is enabled.';
  security_message(port: port, data: report);
  exit(0);
}

exit(99);