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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[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.
[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.
[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.
[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.
[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.
[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.
[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.
[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.
[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.
[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.