Vulnerabilities > CVE-2018-17856 - Unspecified vulnerability in Joomla Joomla!

047910
CVSS 7.2 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
HIGH
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
joomla
nessus
NVD
Published: 2018-10-09
Updated: 2020-08-24

Summary

An issue was discovered in Joomla! before 3.8.13. com_joomlaupdate allows the execution of arbitrary code. The default ACL config enabled the ability of Administrator-level users to access com_joomlaupdate and trigger code execution.

Vulnerable Configurations

Part Description Count
Application
Joomla
220

Nessus

NASL familyCGI abuses
NASL idJOOMLA_3813.NASL
descriptionAccording to its self-reported version number, the Joomla! installation running on the remote web server is prior to 3.8.13. It is, therefore, affected by multiple vulnerabilities. Note that Nessus has not attempted to exploit these issues but has instead relied only on the application
last seen2020-06-01
modified2020-06-02
plugin id118069
published2018-10-12
reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/118069
titleJoomla! < 3.8.13 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(118069);
  script_version("1.6");
  script_cvs_date("Date: 2019/11/01");

  script_cve_id(
    "CVE-2018-17855",
    "CVE-2018-17856",
    "CVE-2018-17857",
    "CVE-2018-17858",
    "CVE-2018-17859"
  );

  script_name(english:"Joomla! < 3.8.13 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of Joomla!.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP application that is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the Joomla!
installation running on the remote web server is prior to 3.8.13. It
is, therefore, affected by multiple vulnerabilities.

Note that Nessus has not attempted to exploit these issues but has
instead relied only on the application's self-reported version number.");
  # https://www.joomla.org/announcements/release-news/5747-joomla-3-8-13-release.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?635bf73c");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Joomla! version 3.8.13 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-17858");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/10/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/10/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/12");

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

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

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("joomla_detect.nasl");
  script_require_keys("installed_sw/Joomla!", "www/PHP", "Settings/ParanoidReport");
  script_require_ports("Services/www", 80);

  exit(0);
}

include("http.inc");
include("vcf.inc");

port = get_http_port(default:80, php:TRUE);

if (report_paranoia < 2) audit(AUDIT_PARANOID);

app_info = vcf::get_app_info(app:"Joomla!", port:port, webapp:TRUE);

vcf::check_granularity(app_info:app_info, sig_segments:3);

constraints = [
  { "min_version" : "1.5.0", "fixed_version" : "3.8.13" }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING, flags:{xsrf:TRUE});

References