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: Moderate
Severity: Low
Versions: 2.5.0-3.9.19
Exploit type: Incorrect Access Control
Reported Date: 2020-April-04
Fixed Date: 2020-July-14
CVE Number: CVE-2020-15699

Description

Missing validation checks at the usergroups table object can result into an broken site configuration.

Affected Installs

Joomla! CMS versions 2.5.0 - 3.9.19

Solution

Upgrade to version 3.9.20

Contact

The JSST at the Joomla! Security Centre.

Reported By: Hoang Kien from VSEC

Project: Joomla!
SubProject: CMS
Impact: Low
Severity: Low
Versions: 3.7.0-3.9.19
Exploit type: CSRF
Reported Date: 2020-May-07
Fixed Date: 2020-July-14
CVE Number: CVE-2020-XXXXX

Description

A missing token check in the ajax_install endpoint com_installer causes a CSRF vulnerability.

Affected Installs

Joomla! CMS versions 3.7.0 - 3.9.19

Solution

Upgrade to version 3.9.20

Contact

The JSST at the Joomla! Security Centre.

Reported By: Bui Duc Anh Khoa from Viettel Cyber Security

Project: Joomla!
SubProject: CMS
Impact: Low
Severity: Low
Versions: 3.7.0-3.9.18
Exploit type: CSRF
Reported Date: 2020-May-08
Fixed Date: 2020-June-02
CVE Number: CVE-2020-13760

Description

Missing token checks in com_postinstall cause CSRF vulnerabilities.

Affected Installs

Joomla! CMS versions 3.7.0 - 3.9.18

Solution

Upgrade to version 3.9.19

Contact

The JSST at the Joomla! Security Centre.

Reported By: Bui Duc Anh Khoa from Viettel Cyber Security

Project: Joomla!
SubProject: CMS
Impact: Low
Severity: Moderate
Versions: 3.0.0-3.9.18
Exploit type: XSS
Reported Date: 2020-April-10
Fixed Date: 2020-June-02
CVE Number: CVE-2020-11022 and CVE-2020-11023

Description

The jQuery project released version 3.5.0, and as part of that, disclosed two security vulnerabilities that affect all prior versions. As mentioned in the jQuery blog, both are "[...] security issues in jQuery’s DOM manipulation methods, as in .html(), .append(), and the others."

The Drupal project has backported the relevant fixes back to jQuery 1.x and Joomla has adopted that patch.

Affected Installs

Joomla! CMS versions 3.0.0 - 3.9.18

Solution

Upgrade to version 3.9.19

Contact

The JSST at the Joomla! Security Centre.

Reported By: David Jardin, JSST

Project: Joomla!
SubProject: CMS
Impact: Moderate
Severity: Low
Versions: 3.0.0-3.9.18
Exploit type: XSS
Reported Date: 2020-May-06
Fixed Date: 2020-June-02
CVE Number: CVE-2020-13762

Description

Incorrect input validation of the module tag option in com_modules allow XSS attacks.

Affected Installs

Joomla! CMS versions 3.0.0 - 3.9.18

Solution

Upgrade to version 3.9.19

Contact

The JSST at the Joomla! Security Centre.

Reported By: Bui Duc Anh Khoa from Viettel Cyber Security

Project: Joomla!
SubProject: CMS
Impact: Low
Severity: Low
Versions: 2.5.0-3.9.18
Exploit type: Insecure Permissions
Reported Date: 2020-April-23
Fixed Date: 2020-June-02
CVE Number: CVE-2020-13763

Description

The default settings of the global "textfilter" configuration doesn't block HTML inputs for 'Guest' users. With 3.9.19, the textfilter for new installations has been set to 'No HTML' for the groups 'Public', 'Guest' and 'Registered'.

Affected Installs

Joomla! CMS versions 2.5.0 - 3.9.18

Solution

Upgrade to version 3.9.19

Contact

The JSST at the Joomla! Security Centre.

Reported By: Brian Teeman

Project: Joomla!
SubProject: CMS
Impact: Moderate
Severity: Low
Versions: 3.0.0-3.9.18
Exploit type: XSS
Reported Date: 2020-May-06
Fixed Date: 2020-June-02
CVE Number: CVE-2020-13761

Description

Lack of input validation in the heading tag option of the "Articles – Newsflash" and "Articles - Categories" modules allow XSS attacks.

Affected Installs

Joomla! CMS versions 3.0.0 - 3.9.18

Solution

Upgrade to version 3.9.19

Contact

The JSST at the Joomla! Security Centre.

Reported By: Bui Duc Anh Khoa from Viettel Cyber Security

Project: Joomla!
SubProject: CMS
Impact: Moderate
Severity: Low
Versions: 2.5.0 - 3.9.16
Exploit type: Incorrect Access Control
Reported Date: 2020-March-13
Fixed Date: 2020-April-21
CVE Number: CVE-2020-11889

Description

Incorrect ACL checks in the access level section of com_users allow the unauthorized deletion of usergroups.

Affected Installs

Joomla! CMS versions 2.5.0 - 3.9.16

Solution

Upgrade to version 3.9.17

Contact

The JSST at the Joomla! Security Centre.

Reported By: Hoang Kien from VSEC

Project: Joomla!
SubProject: CMS
Impact: Moderate
Severity: Low
Versions: 2.5.0 - 3.9.16
Exploit type: Incorrect Access Control
Reported Date: 2020-February-27
Fixed Date: 2020-April-21
CVE Number: CVE-2020-11890

Description

Inproper input validations in the usergroup table class could lead to a broken ACL configuration.

Affected Installs

Joomla! CMS versions 2.5.0 - 3.9.16

Solution

Upgrade to version 3.9.17

Contact

The JSST at the Joomla! Security Centre.

Reported By: Hoang Kien from VSEC

Project: Joomla!
SubProject: CMS
Impact: Low
Severity: Low
Versions: 3.8.8 - 3.9.16
Exploit type: Incorrect Access Control
Reported Date: 2020-March-13
Fixed Date: 2020-April-21
CVE Number: CVE-2020-11891

Description

Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.

Affected Installs

Joomla! CMS versions 3.8.8 - 3.9.16

Solution

Upgrade to version 3.9.17

Contact

The JSST at the Joomla! Security Centre.

Reported By: Hoang Kien from VSEC

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