Developer Network™ 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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- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.