Vulnerabilities > CVE-2017-15919 - SQL Injection vulnerability in Accesspressthemes Ultimate-Form-Builder-Lite

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
accesspressthemes
CWE-89
critical
nessus
NVD
Published: 2017-10-26
Updated: 2024-11-21

Summary

The ultimate-form-builder-lite plugin before 1.3.7 for WordPress has SQL Injection, with resultant PHP Object Injection, via wp-admin/admin-ajax.php.

Vulnerable Configurations

Part Description Count
Application
Accesspressthemes
37

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
  • Object Relational Mapping Injection
    An attacker leverages a weakness present in the database access layer code generated with an Object Relational Mapping (ORM) tool or a weakness in the way that a developer used a persistence framework to inject his or her own SQL commands to be executed against the underlying database. The attack here is similar to plain SQL injection, except that the application does not use JDBC to directly talk to the database, but instead it uses a data access layer generated by an ORM tool or framework (e.g. Hibernate). While most of the time code generated by an ORM tool contains safe access methods that are immune to SQL injection, sometimes either due to some weakness in the generated code or due to the fact that the developer failed to use the generated access methods properly, SQL injection is still possible.
  • SQL Injection through SOAP Parameter Tampering
    An attacker modifies the parameters of the SOAP message that is sent from the service consumer to the service provider to initiate a SQL injection attack. On the service provider side, the SOAP message is parsed and parameters are not properly validated before being used to access a database in a way that does not use parameter binding, thus enabling the attacker to control the structure of the executed SQL query. This pattern describes a SQL injection attack with the delivery mechanism being a SOAP message.
  • Expanding Control over the Operating System from the Database
    An attacker is able to leverage access gained to the database to read / write data to the file system, compromise the operating system, create a tunnel for accessing the host machine, and use this access to potentially attack other machines on the same network as the database machine. Traditionally SQL injections attacks are viewed as a way to gain unauthorized read access to the data stored in the database, modify the data in the database, delete the data, etc. However, almost every data base management system (DBMS) system includes facilities that if compromised allow an attacker complete access to the file system, operating system, and full access to the host running the database. The attacker can then use this privileged access to launch subsequent attacks. These facilities include dropping into a command shell, creating user defined functions that can call system level libraries present on the host machine, stored procedures, etc.
  • SQL Injection
    This attack exploits target software that constructs SQL statements based on user input. An attacker crafts input strings so that when the target software constructs SQL statements based on the input, the resulting SQL statement performs actions other than those the application intended. SQL Injection results from failure of the application to appropriately validate input. When specially crafted user-controlled input consisting of SQL syntax is used without proper validation as part of SQL queries, it is possible to glean information from the database in ways not envisaged during application design. Depending upon the database and the design of the application, it may also be possible to leverage injection to have the database execute system-related commands of the attackers' choice. SQL Injection enables an attacker to talk directly to the database, thus bypassing the application completely. Successful injection can cause information disclosure as well as ability to add or modify data in the database. In order to successfully inject SQL and retrieve information from a database, an attacker:

Nessus

NASL familyCGI abuses
NASL idWORDPRESS_ULTIMATE_FORM_137.NASL
descriptionAccording to its self-reported version, the Ultimate Form Builder Lite Plugin for WordPress running on the remote web server is prior to 1.3.7. It is therefore, affected by a SQL Injection vulnerability, resulting in PHP Object Injection exploitation vectors. With a specially crafted request, a remote, authenticated attacker can inject PHP objects and potentially execute arbitrary code. Note that Nessus has not tested for this issue but has instead relied only on the application
last seen2020-06-01
modified2020-06-02
plugin id105023
published2017-12-05
reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/105023
titleUltimate Form Builder Lite for WordPress < 1.3.7 SQL Injection
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(105023);
  script_version("1.5");
  script_cvs_date("Date: 2019/11/12");

  script_cve_id("CVE-2017-15919");
  script_bugtraq_id(101604);

  script_name(english:"Ultimate Form Builder Lite for WordPress < 1.3.7 SQL Injection");
  script_summary(english:"Checks the plugin / script version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server is running a PHP application that is affected
by a SQL Injection Vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the Ultimate Form Builder
Lite Plugin for WordPress running on the remote web server is prior
to 1.3.7. It is therefore, affected by a SQL Injection vulnerability,
resulting in PHP Object Injection exploitation vectors.

With a specially crafted request, a remote, authenticated attacker
can inject PHP objects and potentially execute arbitrary code.

Note that Nessus has not tested for this issue but has instead relied
only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"https://wordpress.org/plugins/ultimate-form-builder-lite/");
  script_set_attribute(attribute:"see_also", value:"https://vuldb.com/?id.108649");
  script_set_attribute(attribute:"solution", value:
"Upgrade the Ultimate Form Builder Lite Plugin to version 1.3.7 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:H/RL:OF/RC:C");
  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:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-15919");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/10/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/10/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/05");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:wordpress:wordpress");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:accesspressthemes:ultimate-form-builder-lite");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("wordpress_detect.nasl");
  script_require_keys("installed_sw/WordPress", "www/PHP");
  script_require_ports("Services/www", 80);

  exit(0);
}

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

app = "WordPress";
get_install_count(app_name:app, exit_if_zero:TRUE);

port = get_http_port(default:80, php:TRUE);
install = get_single_install(
  app_name : app,
  port     : port
);

dir = install['path'];
install_url = build_url(port:port, qs:dir);
plugin_url = install_url + "wp-content/plugins/ultimate-form-builder-lite/";

plugin = 'Ultimate Form Builder Lite';
# Check KB first
installed = get_kb_item("www/"+port+"/webapp_ext/"+plugin+" under "+dir);

# if not found as installed from kb, check for regex in plugin dir
if (!installed)
{
  # Check for the following string in the url indicated below
  regexes[0] = make_list("form", "frontend");
  checks["/wp-content/plugins/ultimate-form-builder-lite/js/frontend.js"] = regexes;

  # Ensure plugin is installed
  installed = check_webapp_ext(
    checks : checks,
    dir    : dir,
    port   : port,
    ext    : plugin
  );
}

if (!installed)
  audit(AUDIT_WEB_APP_EXT_NOT_INST, app, install_url, plugin + " plugin");

# Get version from readme.txt
res = http_send_recv3(
  method : "GET",
  port   : port,
  item   : dir + "/wp-content/plugins/ultimate-form-builder-lite/readme.txt",
  exit_on_fail : TRUE
);

# Store response body for parsing data
body = res[2];

if ("Ultimate Form" >< body && "Access Keys" >< body)
{
  # Grab version
  match = pregmatch(pattern:"\bStable tag: ([0-9\.]+|$)", string:body);
  if (!empty_or_null(match)) version = match[1];
}
else
audit(AUDIT_UNKNOWN_WEB_APP_VER, plugin + " plugin included in the " + app + " install", plugin_url);

fix = '1.3.7';

# Compare version with fixed
if (ver_compare(ver:version, fix:fix, strict:FALSE) == -1)
{
  report =
  '\n WordPress URL     : ' + install_url +
  '\n Plugin URL        : ' + plugin_url +
  '\n Installed version : ' + version +
  '\n Fixed version     : ' + fix +
  '\n';
  security_report_v4(port:port, extra:report, severity:SECURITY_HOLE);
}
else audit(AUDIT_WEB_APP_EXT_NOT_AFFECTED, app, install_url, plugin + ' plugin', version);

References