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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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[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
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