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Security Announcements

This feed provides announcements of resolved security issues in Joomla! software releases.

For more information about the Joomla! Security Strike Team (JSST) and its processes, please review our Security article.

To report potential security issues, please follow the guidelines in the above referenced article. Please note that we are only able to provide support for the Joomla! CMS, Joomla! Framework, and *.joomla.org network of websites.

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[20190103] - Core - Stored XSS issue in the Global Configuration textfilter settings

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 2.5.0 through 3.9.1
  • Exploit type: XSS
  • Reported Date: 2018-November-29
  • Fixed Date: 2019-January-15
  • CVE Number: CVE-2019-6263

Description

Inadequate checks at the Global Configuration Text Filter settings allowed a stored XSS.

Affected Installs

Joomla! CMS versions 2.5.0 through 3.9.1

Solution

Upgrade to version 3.9.2

Contact

The JSST at the Joomla! Security Centre.

Reported By: Qualys WAF security team

[20190102] - Core - Stored XSS in com_contact

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 2.5.0 through 3.9.1
  • Exploit type: XSS
  • Reported Date: 2018-December-04
  • Fixed Date: 2019-January-15
  • CVE Number: CVE-2019-6261

Description

Inadequate escaping in com_contact leads to a stored XSS vulnerability

Affected Installs

Joomla! CMS versions 2.5.0 through 3.9.1

Solution

Upgrade to version 3.9.2

Contact

The JSST at the Joomla! Security Centre.

Reported By: Antonin Steinhauser

[20190101] - Core - Stored XSS in mod_banners

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 2.5.0 through 3.9.1
  • Exploit type: XSS
  • Reported Date: 2018-December-01
  • Fixed Date: 2019-January-15
  • CVE Number: CVE-2019-6264

Description

Inadequate escaping in mod_banners leads to a stored XSS vulnerability.

Affected Installs

Joomla! CMS versions 2.5.0 through 3.9.1

Solution

Upgrade to version 3.9.2

Contact

The JSST at the Joomla! Security Centre.

Reported By: Antonin Steinhauser

[20181005] - Core - CSRF hardening in com_installer

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions: 2.5.0 through 3.8.12
  • Exploit type: CSRF
  • Reported Date: 2018-September-26
  • Fixed Date: 2018-October-02
  • CVE Number: CVE-2018-17858

Description

Added additional CSRF hardening in com_installer actions in the backend.

Affected Installs

Joomla! CMS versions 2.5.0 through 3.8.12

Solution

Upgrade to version 3.8.13

Contact

The JSST at the Joomla! Security Centre.

Reported By: Raviraj A. Powar

[20181004] - Core - ACL Violation in com_users for the admin verification

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions: 1.5.0 through 3.8.12
  • Exploit type: ACL Violation
  • Reported Date: 2017-December-27
  • Fixed Date: 2018-October-02
  • CVE Number: CVE-2018-17855

Description

In case that an attacker gets access to the mail account of an user who can approve admin verifications in the registration process he can activate himself.

Affected Installs

Joomla! CMS versions 1.5.0 through 3.8.12

Solution

Upgrade to version 3.8.13

Contact

The JSST at the Joomla! Security Centre.

Reported By: Paul Freeman

[20181003] - Core - Access level Violation in com_tags

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions: 3.1.0 through 3.8.12
  • Exploit type: ACL Violation
  • Reported Date: 2018-June-20
  • Fixed Date: 2018-October-02
  • CVE Number: CVE-2018-17857

Description

Inadequate checks on the tags search fields can lead to an access level violation.

Affected Installs

Joomla! CMS versions 3.1.0 through 3.8.12

Solution

Upgrade to version 3.8.13

Contact

The JSST at the Joomla! Security Centre.

Reported By: Андрей Капитанов

[20181002] - Core - Inadequate default access level for com_joomlaupdate

  • Project: Joomla!
  • SubProject: CMS
  • Impact: High
  • Severity: Low
  • Versions: 2.5.4 through 3.8.12
  • Exploit type: Object Injection
  • Reported Date: 2018-June-21
  • Fixed Date: 2018-October-02
  • CVE Number: CVE-2018-17856

Description

Joomla’s com_joomlaupdate allows the execution of arbitrary code. The default ACL config enabled access of Administrator-level users to access com_joomlaupdate and trigger a code execution.

Affected Installs

Joomla! CMS versions 2.5.4 through 3.8.12

Solution

Upgrade to version 3.8.13

Contact

The JSST at the Joomla! Security Centre.

Reported By: Codesafescan

[20181001] - Core - Hardening com_contact contact form

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions: 2.5.0 through 3.8.12
  • Exploit type: Incorrect Access Control
  • Reported Date: 2018-September-17
  • Fixed Date: 2018-October-02
  • CVE Number: CVE-2018-17859

Description

Inadequate checks in com_contact could allowed mail submission in disabled forms.

Affected Installs

Joomla! CMS versions 2.5.0 through 3.8.12

Solution

Upgrade to version 3.8.13

Contact

The JSST at the Joomla! Security Centre.

Reported By: David Jardin (JSST)

[20180803] - Core - ACL Violation in custom fields

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 3.7.0 through 3.8.11
  • Exploit type: ACL Violation
  • Reported Date: 2018-July-10
  • Fixed Date: 2018-August-28
  • CVE Number: CVE-2018-15881

Description

Inadequate checks regarding disabled fields can lead to an ACL violation.

Affected Installs

Joomla! CMS versions 3.7.0 through 3.8.11

Solution

Upgrade to version 3.8.12

Contact

The JSST at the Joomla! Security Centre.

Reported By: Elisa Foltyn, COOLCAT CREATIONS

[20180802] - Core - Stored XSS vulnerability in the frontend profile

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 1.5.0 through 3.8.11
  • Exploit type: XSS
  • Reported Date: 2018-July-10
  • Fixed Date: 2018-August-28
  • CVE Number: CVE-2018-15880

Description

Inadequate output filtering on the user profile page could lead to a stored XSS attack.

Affected Installs

Joomla! CMS versions 1.5.0 through 3.8.11

Solution

Upgrade to version 3.8.12

Contact

The JSST at the Joomla! Security Centre.

Reported By: Fouad Maakor

[20180801] - Core - Hardening the InputFilter for PHAR stubs

  • Project: Joomla!
  • SubProject: CMS
  • Impact: High
  • Severity: Low
  • Versions: 1.5.0 through 3.8.11
  • Exploit type: Malicious file upload
  • Reported Date: 2018-August-23
  • Fixed Date: 2018-August-28
  • CVE Number: CVE-2018-15882

Description

Inadequate checks in the InputFilter class could allow specifically prepared PHAR files to pass the upload filter.

Affected Installs

Joomla! CMS versions 1.5.0 through 3.8.11

Solution

Upgrade to version 3.8.12

Contact

The JSST at the Joomla! Security Centre.

Reported By: Davide Tampellini

[20180602] - Core - XSS vulnerability in language switcher module

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 1.6.0 through 3.8.8
  • Exploit type: XSS
  • Reported Date: 2018-May-07
  • Fixed Date: 2018-June-26
  • CVE Number: CVE-2018-12711

Description

In some cases the link of the current language might contain unescaped HTML special characters. This may lead to reflective XSS via injection of arbitrary parameters and/or values on the current page url.

Affected Installs

Joomla! CMS versions 1.6.0 through 3.8.8

Solution

Upgrade to version 3.8.9

Contact

The JSST at the Joomla! Security Centre.

Reported By: Borja Lorenzo, Innotecsystem

[20180601] - Core - Local File Inclusion with PHP 5.3

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 2.5.0 through 3.8.8
  • Exploit type: LFI
  • Reported Date: 2018-April-23
  • Fixed Date: 2018-June-26
  • CVE Number: CVE-2018-12712

Description

Our autoload code checks classnames to be valid, using the "class_exists" function in PHP. In PHP 5.3 this function validates invalid names as valid, which can result in a Local File Inclusion.

Affected Installs

Joomla! CMS versions 2.5.0 through 3.8.8

Solution

Upgrade to version 3.8.9

Contact

The JSST at the Joomla! Security Centre.

Reported By: Davide Tampellini

[20180509] - Core - XSS vulnerability in the media manager

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 1.5.0 through 3.8.7
  • Exploit type: XSS
  • Reported Date: 2017-October-28
  • Fixed Date: 2018-May-22
  • CVE Number: CVE-2018-6378

Description

Inadequate filtering of file and folder names lead to various XSS attack vectors in the media manager.

Affected Installs

Joomla! CMS versions 1.5.0 through 3.8.7

Solution

Upgrade to version 3.8.8

Contact

The JSST at the Joomla! Security Centre.

Reported By: David Jardin, JSST

[20180508] - Core - Possible XSS attack in the redirect method

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 3.1.2 through 3.8.7
  • Exploit type: XSS
  • Reported Date: 2018-March-30
  • Fixed Date: 2018-May-22
  • CVE Number: CVE-2018-11328

Description

Under specific circumstances (a redirect issued with a URI containing a username and password when the Location: header cannot be used), a lack of escaping the user-info component of the URI could result in a XSS vulnerability.

Affected Installs

Joomla! CMS versions 3.1.2 through 3.8.7

Solution

Upgrade to version 3.8.8

Contact

The JSST at the Joomla! Security Centre.

Reported By: David Jardin, JSST

[20180507] - Core - Session deletion race condition

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Medium
  • Severity: Low
  • Versions: 3.0.0 through 3.8.7
  • Exploit type: Session race condition
  • Reported Date: 2017-July-08
  • Fixed Date: 2018-May-22
  • CVE Number: CVE-2018-11324

Description

A long running background process, such as remote checks for core or extension updates, could create a race condition where a session which was expected to be destroyed would be recreated.

Affected Installs

Joomla! CMS versions 3.0.0 through 3.8.7

Solution

Upgrade to version 3.8.8

Additional Resources

Contact

The JSST at the Joomla! Security Centre.

Reported By: David Jardin, JSST

[20180506] - Core - Filter field in com_fields allows remote code execution

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions: 3.7.0 through 3.8.7
  • Exploit type: Remote Code Execution
  • Reported Date: 2018-May-14
  • Fixed Date: 2018-May-22
  • CVE Number: CVE-2018-11321

Description

Inadequate filtering allows users authorised to create custom fields to manipulate the filtering options and inject an unvalidated option.

Affected Installs

Joomla! CMS versions 3.7.0 through 3.8.7

Solution

Upgrade to version 3.8.8

Contact

The JSST at the Joomla! Security Centre.

Reported By: Benjamin Trenkle, JSST

[20180505] - Core - XSS Vulnerabilities & additional hardening

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Versions: 3.0.0 through 3.8.7
  • Exploit type:XSS
  • Reported Date:2018-February-02 & 2018-March-27
  • Fixed Date: 2018-May-22
  • CVE Number: CVE-2018-11326

Description

Inadequate input filtering leads to multiple XSS vulnerabilities. Additionally, the default filtering settings could potentially allow users of the default Administrator user group to perform a XSS attack.

Affected Installs

Joomla! CMS versions 3.0.0 through 3.8.7

Solution

Upgrade to version 3.8.8

Additional Resources

Contact

The JSST at the Joomla! Security Centre.

Reported By: Kai Zhao of 3H Security Team & Zhouyuan Yang (FortiGuard Labs)

[20180504] - Core - Installer leaks plain text password to local user

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 3.0.0 through 3.8.7
  • Exploit type: Information Disclosure
  • Reported Date: 2018-February-09
  • Fixed Date: 2018-May-22
  • CVE Number: CVE-2018-11325

Description

The web install application would autofill password fields after either a form validation error or navigating to a previous install step, and displays the plain text password for the administrator account at the confirmation screen.

Affected Installs

Joomla! CMS versions 3.0.0 through 3.8.7

Solution

Upgrade to version 3.8.8

Contact

The JSST at the Joomla! Security Centre.

Reported By: Sascha Egerer

[20180503] - Core - Information Disclosure about unpublished tags

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Moderate
  • Versions: 3.1.0 through 3.8.7
  • Exploit type: Information Disclosure
  • Reported Date: 2018-April-27
  • Fixed Date: 2018-May-22
  • CVE Number: CVE-2018-11327

Description

Inadequate checks allowed users to see the names of tags that were either unpublished or published with restricted view permission .

Affected Installs

Joomla! CMS versions 3.1.0 through 3.8.7

Solution

Upgrade to version 3.8.8

Contact

The JSST at the Joomla! Security Centre.

Reported By: Phil Taylor, JSST

[20180502] - Core - Add PHAR files to the upload blacklist

  • Project: Joomla!
  • SubProject: CMS
  • Impact: High
  • Severity: Low
  • Versions: 2.5.0 through 3.8.7
  • Exploit type: Malicious file upload
  • Reported Date: 2018-March-14
  • Fixed Date: 2018-May-22
  • CVE Number: CVE-2018-11322

Description

Depending on the server configuration, PHAR files might be handled as executable PHP scripts by the webserver.

Affected Installs

Joomla! CMS versions 2.5.0 through 3.8.7

Solution

Upgrade to version 3.8.8

Contact

The JSST at the Joomla! Security Centre.

Reported By: Demis Palma, JSST

[20180501] - Core - ACL violation in access levels

  • Project: Joomla!
  • SubProject: CMS
  • Impact: High
  • Severity: Low
  • Versions: 2.5.0 through 3.8.7
  • Exploit type: ACL violation
  • Reported Date: 2018-March-08
  • Fixed Date: 2018-May-22
  • CVE Number: CVE-2018-11323

Description

Inadequate checks allowed users to modify the access levels of user groups with higher permissions.

Affected Installs

Joomla! CMS versions 2.5.0 through 3.8.7

Solution

Upgrade to version 3.8.8

Contact

The JSST at the Joomla! Security Centre.

Reported By: Matias Aguirre, JSST

[20180301] - Core - SQLi vulnerability User Notes

  • Project: Joomla!
  • SubProject: CMS
  • Impact: High
  • Severity: Low
  • Versions: 3.5.0 through 3.8.5
  • Exploit type: SQLi
  • Reported Date: 2018-March-08
  • Fixed Date: 2018-March-12
  • CVE Number: CVE-2018-8045

Description

The lack of type casting of a variable in SQL statement leads to a SQL injection vulnerability in the User Notes list view

Affected Installs

Joomla! CMS versions 3.5.0 through 3.8.5

Solution

Upgrade to version 3.8.6

Contact

The JSST at the Joomla! Security Centre.

Reported By: Entropy Moe

[20180104] - Core - SQLi vulnerability in Hathor postinstall message

  • Project: Joomla!
  • SubProject: CMS
  • Impact: High
  • Severity: Low
  • Versions: 3.7.0 through 3.8.3
  • Exploit type: SQLi
  • Reported Date: 2017-November-17
  • Fixed Date: 2018-January-30
  • CVE Number: CVE-2018-6376

Description

The lack of type casting of a variable in SQL statement leads to a SQL injection vulnerability in the Hathor postinstall message.

Affected Installs

Joomla! CMS versions 3.7.0 through 3.8.3

Solution

Upgrade to version 3.8.4

Contact

The JSST at the Joomla! Security Centre.

Reported By: Karim Ouerghemmi, ripstech.com

[20180103] - Core - XSS vulnerability in Uri class

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions: 1.5.0 through 3.8.3
  • Exploit type: XSS
  • Reported Date: 2017-November-17
  • Fixed Date: 2018-January-30
  • CVE Number: CVE-2018-6379

Description

Inadequate input filtering in the Uri class (formerly JUri) leads to a XSS vulnerability.

Affected Installs

Joomla! CMS versions 1.5.0 through 3.8.3

Solution

Upgrade to version 3.8.4

Contact

The JSST at the Joomla! Security Centre.

Reported By: Octavian Cinciu

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