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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Joomla! 3.6.5 includes additional security hardening mechanisms prepared by the JSST, thanks in part to issue reports from Fotis Evangelou and Nicholas Dionysopoulos, which restricts a user's ability to make potentially damaging configuration changes. This includes restricting the ability to set the "New User Registration Group" and "Guest User Group" to a group with Super User permissions and restricting the ability for a lesser privileged user to make user group assignment changes to users in a Super User group.
Additionally, we have modified the behavior of JUser::authorise() to only return a boolean value. Previously, this method could return either a boolean value or null because the underlying call to JAccess::check() can also return a null value; neither JUser::authorise() or JAccess::check() documented this though. We have determined that based on how the API is used that JUser::authorise() should only return a boolean value. If a developer requires the previous behavior of a null return value (which indicates an "implicit" denied state versus "explicit" signified by boolean false), they should use JAccess::check() instead. The documentation for JAccess::check() has been updated to indicate the null return value as well.
The JSST at the Joomla! Security Centre.
Inadequate ACL checks in the Beez3 com_content article layout override enables a user to view restricted content.
Joomla! CMS versions 3.0.0 through 3.6.4
Upgrade to version 3.6.5
The JSST at the Joomla! Security Centre.
Inadequate filesystem checks allowed files with alternative PHP file extensions to be uploaded.
Joomla! CMS versions 3.0.0 through 3.6.4
Upgrade to version 3.6.5
The JSST at the Joomla! Security Centre.
Incorrect use of unfiltered data stored to the session on a form validation failure allows for existing user accounts to be modified; to include resetting their username, password, and user group assignments.
Joomla! CMS versions 1.6.0 through 3.6.4
Upgrade to version 3.6.5
The JSST at the Joomla! Security Centre.
Incorrect use of unfiltered data allows for existing user accounts to be modified; to include resetting their username, password, and user group assignments.
Joomla! CMS versions 3.4.4 through 3.6.3
Upgrade to version 3.6.4
The JSST at the Joomla! Security Centre.
Incorrect use of unfiltered data allows for users to register on a site with elevated privileges.
Joomla! CMS versions 3.4.4 through 3.6.3
Upgrade to version 3.6.4
The JSST at the Joomla! Security Centre.
Inadequate checks allows for users to register on a site when registration has been disabled.
Joomla! CMS versions 3.4.4 through 3.6.3
Upgrade to version 3.6.4
The JSST at the Joomla! Security Centre.
Inadequate escaping leads to XSS vulnerability in mail component.
Joomla! CMS versions 1.6.0 through 3.6.0
Upgrade to version 3.6.1
The JSST at the Joomla! Security Centre.
Inadequate ACL checks in com_content provide potential read access to data which should be access restricted to users with edit_own level.
Joomla! CMS versions 1.6.0 through 3.6.0
Upgrade to version 3.6.1
The JSST at the Joomla! Security Centre.
Add additional CSRF hardening in com_joomlaupdate.
Joomla! CMS version 3.6.0
Upgrade to version 3.6.1
The JSST at the Joomla! Security Centre.