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.
You can subscribe to notifications from this feed through a RSS reader or email notifications via FeedBurner.
[20190502] - Core - By-passing protection of Phar Stream Wrapper Interceptor
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.9.3 through 3.9.5
- Exploit type: Object Injection
- Reported Date: 2019-March-27
- Fixed Date: 2019-May-07
Description
In Joomla 3.9.3, the vulnerability of insecure deserialization when executing Phar archives was addressed by removing the known attack vector in the Joomla core. In order to intercept file invocations like file_exists or stat on compromised Phar archives the base name has to be determined and checked before allowing to be handled by PHP Phar stream handling. The used implementation however is vulnerable to path traversal leading to scenarios where the Phar archive to be assessed is not the actual (compromised) file.
Affected Installs
Joomla! CMS versions 3.9.3 through 3.9.5
Solution
Upgrade to version 3.9.6
Contact
The JSST at the Joomla! Security Centre.
[20190501] - Core - XSS in com_users ACL debug views
- Project: Joomla!
- SubProject: CMS
- Impact: Moderate
- Severity: Low
- Versions: 1.7.0 through 3.9.5
- Exploit type: XSS
- Reported Date: 2019-April-29
- Fixed Date: 2019-May-07
- CVE Number: CVE-2019-11809
Description
The debug views of com_users do not properly escape user supplied data, which leads to a potential XSS attack vector.
Affected Installs
Joomla! CMS versions 1.7.0 through 3.9.5
Solution
Upgrade to version 3.9.6
Contact
The JSST at the Joomla! Security Centre.
[20190403] - Core - Object.prototype pollution in JQuery $.extend
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Moderate
- Versions: 3.0.0 through 3.9.4
- Exploit type: XSS
- Reported Date: 2019-March-25
- Fixed Date: 2019-April-09
- CVE Number: CVE-2019-11358
Description
The $.extend method of JQuery is vulnerable to Object.prototype pollution attacks.
Affected Installs
Joomla! CMS versions 3.0.0 through 3.9.4
Solution
Upgrade to version 3.9.5
Contact
The JSST at the Joomla! Security Centre.
[20190402] - Core - Helpsites refresh endpoint callable for unauthenticated users
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: High
- Versions: 3.2.0 through 3.9.4
- Exploit type: ACL Violation
- Reported Date: 2019-March-13
- Fixed Date: 2019-April-08
- CVE Number: CVE-2019-10946
Description
The "refresh list of helpsites" endpoint of com_users lacks access checks, allowing calls from unauthenticated users.
Affected Installs
Joomla! CMS versions 3.2.0 through 3.9.4
Solution
Upgrade to version 3.9.5
Contact
The JSST at the Joomla! Security Centre.
[20190401] - Core - Directory Traversal in com_media
- Project: Joomla!
- SubProject: CMS
- Impact: Moderate
- Severity: Low
- Versions: 1.5.0 through 3.9.4
- Exploit type: Directory Traversal
- Reported Date: 2019-March-13
- Fixed Date: 2019-April-08
- CVE Number: CVE-2019-10945
Description
The Media Manager component does not properly sanitise the folder parameter, allowing attackers to act outside the media manager root directory.
Affected Installs
Joomla! CMS versions 1.5.0 through 3.9.4
Solution
Upgrade to version 3.9.5
Contact
The JSST at the Joomla! Security Centre.
[20190304] - Core - Missing ACL check in sample data plugins
- Project: Joomla!
- SubProject: CMS
- Impact: Moderate
- Severity: High
- Versions: 3.8.0 through 3.9.3
- Exploit type: XSS
- Reported Date: 2019-February-28
- Fixed Date: 2019-March-12
- CVE Number: CVE-2019-9713
Description
The sample data plugins lack ACL checks, allowing unauthorized access.
Affected Installs
Joomla! CMS versions 3.8.0 through 3.9.3
Solution
Upgrade to version 3.9.4
Contact
The JSST at the Joomla! Security Centre.
[20190303] - Core - XSS in media form field
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.0.0 through 3.9.3
- Exploit type: XSS
- Reported Date: 2019-February-25
- Fixed Date: 2019-March-12
- CVE Number: CVE-2019-9714
Description
The media form field lacks escaping, leading to a XSS vulnerability.
Affected Installs
Joomla! CMS versions 3.2.0 through 3.9.3
Solution
Upgrade to version 3.9.4
Contact
The JSST at the Joomla! Security Centre.
[20190302] - Core - XSS in item_title layout
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.0.0 through 3.9.3
- Exploit type: XSS
- Reported Date: 2019-February-25
- Fixed Date: 2019-March-12
- CVE Number: CVE-2019-9711
Description
The item_title layout in edit views lacks escaping, leading to a XSS vulnerability.
Affected Installs
Joomla! CMS versions 3.2.0 through 3.9.3
Solution
Upgrade to version 3.9.4
Contact
The JSST at the Joomla! Security Centre.
[20190301] - Core - XSS in com_config JSON handler
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.2.0 through 3.9.3
- Exploit type: XSS
- Reported Date: 2019-March-04
- Fixed Date: 2019-March-12
- CVE Number: CVE-2019-9712
Description
The JSON handler in com_config lacks input validation, leading to XSS vulnerability.
Affected Installs
Joomla! CMS versions 3.2.0 through 3.9.3
Solution
Upgrade to version 3.9.4
Contact
The JSST at the Joomla! Security Centre.
[20190206] - Core - Implement the TYPO3 PHAR stream wrapper
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 2.5.0 through 3.9.2
- Exploit type: Object Injection
- Reported Date: 2019-January-18
- Fixed Date: 2019-February-12
- CVE Number: CVE-2019-7743
Description
The phar:// stream wrapper can be used for objection injection attacks. We now disallow usage of the phar:// handler for non .phar-files within the CMS globally by implementing the TYPO3 PHAR stream wrapper.
Affected Installs
Joomla! CMS versions 2.5.0 through 3.9.2
Solution
Upgrade to version 3.9.3
Contact
The JSST at the Joomla! Security Centre.