Vulnerabilities > CVE-2018-15882 - Unrestricted Upload of File with Dangerous Type vulnerability in Joomla Joomla!
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
An issue was discovered in Joomla! before 3.8.12. Inadequate checks in the InputFilter class could allow specifically prepared phar files to pass the upload filter.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Accessing Functionality Not Properly Constrained by ACLs In applications, particularly web applications, access to functionality is mitigated by the authorization framework, whose job it is to map ACLs to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application or can run queries for data that he is otherwise not supposed to.
- Privilege Abuse An adversary is able to exploit features of the target that should be reserved for privileged users or administrators but are exposed to use by lower or non-privileged accounts. Access to sensitive information and functionality must be controlled to ensure that only authorized users are able to access these resources. If access control mechanisms are absent or misconfigured, a user may be able to access resources that are intended only for higher level users. An adversary may be able to exploit this to utilize a less trusted account to gain information and perform activities reserved for more trusted accounts. This attack differs from privilege escalation and other privilege stealing attacks in that the adversary never actually escalates their privileges but instead is able to use a lesser degree of privilege to access resources that should be (but are not) reserved for higher privilege accounts. Likewise, the adversary does not exploit trust or subvert systems - all control functionality is working as configured but the configuration does not adequately protect sensitive resources at an appropriate level.
Nessus
NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_BF2B9C56B93E11E8B2A8A4BADB296695.NASL description JSST reports: Multiple low-priority Vulnerabilities Inadequate checks in the InputFilter class could allow specifically prepared PHAR files to pass the upload filter. Inadequate output filtering on the user profile page could lead to a stored XSS attack. Inadequate checks regarding disabled fields can lead to an ACL violation. last seen 2020-06-01 modified 2020-06-02 plugin id 117511 published 2018-09-17 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/117511 title FreeBSD : joomla3 -- vulnerabilitiesw (bf2b9c56-b93e-11e8-b2a8-a4badb296695) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from the FreeBSD VuXML database : # # Copyright 2003-2019 Jacques Vidrine and contributors # # Redistribution and use in source (VuXML) and 'compiled' forms (SGML, # HTML, PDF, PostScript, RTF and so forth) with or without modification, # are permitted provided that the following conditions are met: # 1. Redistributions of source code (VuXML) must retain the above # copyright notice, this list of conditions and the following # disclaimer as the first lines of this file unmodified. # 2. Redistributions in compiled form (transformed to other DTDs, # published online in any format, converted to PDF, PostScript, # RTF and other formats) must reproduce the above copyright # notice, this list of conditions and the following disclaimer # in the documentation and/or other materials provided with the # distribution. # # THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, # OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT # OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION, # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # include("compat.inc"); if (description) { script_id(117511); script_version("1.5"); script_cvs_date("Date: 2019/10/11 10:17:50"); script_cve_id("CVE-2018-15860", "CVE-2018-15880", "CVE-2018-15881", "CVE-2018-15882"); script_name(english:"FreeBSD : joomla3 -- vulnerabilitiesw (bf2b9c56-b93e-11e8-b2a8-a4badb296695)"); script_summary(english:"Checks for updated package in pkg_info output"); script_set_attribute( attribute:"synopsis", value:"The remote FreeBSD host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "JSST reports: Multiple low-priority Vulnerabilities Inadequate checks in the InputFilter class could allow specifically prepared PHAR files to pass the upload filter. Inadequate output filtering on the user profile page could lead to a stored XSS attack. Inadequate checks regarding disabled fields can lead to an ACL violation." ); # https://developer.joomla.org/security-centre/743-20180801-core-hardening-the-inputfilter-for-phar-stubs.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?1f83f6ac" ); # https://developer.joomla.org/security-centre/744-20180802-core-stored-xss-vulnerability-in-the-frontend-profile.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?8540ce43" ); # https://developer.joomla.org/security-centre/745-20180803-core-acl-violation-in-custom-fields.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?e75ac96b" ); # https://vuxml.freebsd.org/freebsd/bf2b9c56-b93e-11e8-b2a8-a4badb296695.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?aa355326" ); script_set_attribute(attribute:"solution", value:"Update the affected package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); 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_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:joomla3"); script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/23"); script_set_attribute(attribute:"patch_publication_date", value:"2018/09/15"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/17"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"FreeBSD Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info"); exit(0); } include("audit.inc"); include("freebsd_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD"); if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (pkg_test(save_report:TRUE, pkg:"joomla3<3.8.12")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get()); else security_hole(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family CGI abuses NASL id JOOMLA_3812.NASL description According to its self-reported version number, the Joomla! installation running on the remote web server is prior to 3.8.12. It is, therefore, affected by malicious file upload and stored cross-site scripting vulnerabilities. Additionally, versions 3.7.0 through 3.8.11 are affected by an access control list violation vulnerability. Note that Nessus has not attempted to exploit these issues but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 112160 published 2018-08-28 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/112160 title Joomla! < 3.8.12 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(112160); script_version("1.6"); script_cvs_date("Date: 2019/11/04"); script_cve_id("CVE-2018-15880", "CVE-2018-15881", "CVE-2018-15882"); script_bugtraq_id(105161, 105164, 105166); script_name(english:"Joomla! < 3.8.12 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 3.8.12. It is, therefore, affected by malicious file upload and stored cross-site scripting vulnerabilities. Additionally, versions 3.7.0 through 3.8.11 are affected by an access control list violation vulnerability. 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/5743-joomla-3-8-12-release.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b0792312"); script_set_attribute(attribute:"solution", value: "Upgrade to Joomla! version 3.8.12 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:U/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:U/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-15882"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/10"); script_set_attribute(attribute:"patch_publication_date", value:"2018/08/28"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/28"); 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" : "3.8.12" } ]; vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE, flags:{xss:TRUE});