Invision Community Blog Multiple Vulnerabilities (SQLi, XSS)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(18446);
  script_version("1.21");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2005-1945", "CVE-2005-1946");
  script_bugtraq_id(13910);

  script_name(english:"Invision Community Blog Multiple Vulnerabilities (SQLi, XSS)");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP application that is vulnerable to
multiple attacks.");
  script_set_attribute(attribute:"description", value:
"The remote host is running Invision Community Blog, a plugin for
Invision Power Board that lets users have their own blogs. 

The version installed on the remote host fails to properly sanitize
user-supplied data making it prone to multiple SQL injection and
cross-site scripting vulnerabilities.  These flaws may allow an
attacker to gain access to sensitive information such as passwords and
cookie data.");
  # http://web.archive.org/web/20061010145552/http://www.gulftech.org/?node=research&article_id=00078-06072005
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9223034f");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Invision Community Blog 1.1.2 Final or greater.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:U/RC:C");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(20, 74, 79, 442, 629, 711, 712, 722, 725, 750, 751, 800, 801, 809, 811, 864, 900, 928, 931, 990);

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/06/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/06/10");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:invision_power_services:invision_community_blog");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2005-2022 Tenable Network Security, Inc.");

  script_dependencies("invision_power_board_detect.nasl");
  script_require_keys("www/invision_power_board");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);

  exit(0);
}

include("global_settings.inc");
include("misc_func.inc");
include("http.inc");

port = get_http_port(default:80);
if (!can_host_php(port:port)) exit(0);


# Test an install.
install = get_kb_item(string("www/", port, "/invision_power_board"));
if (isnull(install)) exit(0);
matches = eregmatch(string:install, pattern:"^(.+) under (/.*)$");
if (!isnull(matches)) {
  dir = matches[2];

  # To exploit it, we need to find an existing blog.
  r = http_send_recv3(method: "GET", item:string(dir, "/index.php?automodule=blog"), port:port);
  if (isnull(r)) exit(0);

  pat = string(dir, "/index.php?s=.+&automodule=blog&blogid=([0-9]+)&");
  matches = egrep(string: r[2], pattern:pat, icase:TRUE);
  if (matches) {
    foreach match (split(matches)) {
      match = chomp(match);
      blog = eregmatch(pattern:pat, string:match);
      if (!isnull(blog)) {
        blog = blog[1];

        # Try to exploit one of the SQL injection vulnerabilities.
        r = http_send_recv3(method: "GET", 
          item:string(
            dir, "/index.php?",
            "automodule=blog&",
            "blog=", blog, "&",
            "cmd=editentry&",
            # nb: look for this exploit string later.
            "eid=99'", SCRIPT_NAME
          ),
          port:port
        );
        if (isnull(r)) exit(0);

        if (
          "an error in your SQL syntax" >< r[2] &&
          egrep(
            string:r[2], 
            pattern:string("SELECT \* FROM .*entries WHERE entry_id = 99&amp;#39;", SCRIPT_NAME)
          )
        ) {
          security_warning(port);
	  set_kb_item(name: 'www/'+port+'/SQLInjection', value: TRUE);
	  set_kb_item(name: 'www/'+port+'/XSS', value: TRUE);
          exit(0);
        }

        # We're not vulnerable, but we're finished checking too.
        break;
      }
    }
  }
}