Joomla

[20161205] - PHPMailer Security Advisory

Joomla Security - Mar, 12/27/2016 - 09:00
  • Project: Joomla!
  • Severity: High
  • Versions: 1.6.0 through 3.6.5
  • Exploit type: Remote Code Execution in third-party PHPMailer library
  • CVE Number: CVE-2016-10033
Description

All versions of the third-party PHPMailer library distributed with Joomla! versions up to 3.6.5 are vulnerable to a remote code execution vulnerability. This is patched in PHPMailer 5.2.18 which will be included with Joomla! 3.7. After analysis, the JSST has determined that through correct use of the JMail class, there are additional validations in place which make executing this vulnerability impractical within the Joomla environment. As well, the vulnerability requires being able to pass user input to a message’s “from” address; all places in the core Joomla API which send mail use the sender address set in the global configuration and does not allow for user input to be set elsewhere. However, extensions which bundle a separate version of PHPMailer or do not use the Joomla API to send email may be vulnerable to this issue.

Generally, the Joomla project does not issue advisories regarding third party libraries, however given the severity of this issue we felt it important to advise our users that we are aware of this issue and we have determined that the additional validations in our API prevent triggering this vulnerability.

Affected Installs

Joomla! CMS versions 1.6.0 through 3.6.5

Solution

No action required for Joomla users, the updated library will be included in the next scheduled release and additional mechanisms exist in Joomla core to prevent triggering the vulnerability. Users of the PHPMailer library separate from Joomla are advised to upgrade to 5.2.18 or newer ASAP.

Additional Resources Contact

The JSST at the Joomla! Security Centre.

Reported By: Dawid Golunski
Categorías: Joomla

[20161204] - Misc. Security Hardening

Joomla Security - Mié, 12/14/2016 - 06:00
  • Project: Joomla!
  • SubProject: CMS
Description

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.

Contact

The JSST at the Joomla! Security Centre.

Categorías: Joomla

[20161203] - Core - Information Disclosure

Joomla Security - Mié, 12/14/2016 - 06:00
  • Project: Joomla!
  • SubProject: CMS
  • Severity: Low
  • Versions: 3.0.0 through 3.6.4
  • Exploit type: Information Disclosure
  • Reported Date: 2016-April-15
  • Fixed Date: 2016-December-06
  • CVE Number: CVE-2016-9837
Description

Inadequate ACL checks in the Beez3 com_content article layout override enables a user to view restricted content.

Affected Installs

Joomla! CMS versions 3.0.0 through 3.6.4

Solution

Upgrade to version 3.6.5

Contact

The JSST at the Joomla! Security Centre.

Reported By: Christiaan Klatte and Brian Teeman
Categorías: Joomla

[20161202] - Core - Shell Upload

Joomla Security - Mié, 12/14/2016 - 06:00
  • Project: Joomla!
  • SubProject: CMS
  • Severity: Low
  • Versions: 3.0.0 through 3.6.4
  • Exploit type: Shell Upload
  • Reported Date: 2016-October-26
  • Fixed Date: 2016-December-06
  • CVE Number: CVE-2016-9836
Description

Inadequate filesystem checks allowed files with alternative PHP file extensions to be uploaded.

Affected Installs

Joomla! CMS versions 3.0.0 through 3.6.4

Solution

Upgrade to version 3.6.5

Contact

The JSST at the Joomla! Security Centre.

Reported By: Xiphos Research Ltd.
Categorías: Joomla

[20161201] - Core - Elevated Privileges

Joomla Security - Mié, 12/14/2016 - 06:00
  • Project: Joomla!
  • SubProject: CMS
  • Severity: High
  • Versions: 1.6.0 through 3.6.4
  • Exploit type: Elevated Privileges
  • Reported Date: 2016-November-04
  • Fixed Date: 2016-December-06
  • CVE Number: CVE-2016-9838
Description

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.

Affected Installs

Joomla! CMS versions 1.6.0 through 3.6.4

Solution

Upgrade to version 3.6.5

Contact

The JSST at the Joomla! Security Centre.

Reported By: Andreev Ivan
Categorías: Joomla

[20161003] - Core - Account Modifications

Joomla Security - Jue, 10/27/2016 - 21:00
  • Project: Joomla!
  • SubProject: CMS
  • Severity: High
  • Versions: 3.4.4 through 3.6.3
  • Exploit type: Account Modifications
  • Reported Date: 2016-October-26
  • Fixed Date: 2016-October-25
  • CVE Number: CVE-2016-9081
Description

Incorrect use of unfiltered data allows for existing user accounts to be modified; to include resetting their username, password, and user group assignments.

Affected Installs

Joomla! CMS versions 3.4.4 through 3.6.3

Solution

Upgrade to version 3.6.4

Contact

The JSST at the Joomla! Security Centre.

Reported By: Joomla! Security Strike Team
Categorías: Joomla

[20161002] - Core - Elevated Privileges

Joomla Security - Mar, 10/25/2016 - 21:00
  • Project: Joomla!
  • SubProject: CMS
  • Severity: High
  • Versions: 3.4.4 through 3.6.3
  • Exploit type: Elevated Privileges
  • Reported Date: 2016-October-21
  • Fixed Date: 2016-October-25
  • CVE Number: CVE-2016-8869
Description

Incorrect use of unfiltered data allows for users to register on a site with elevated privileges.

Affected Installs

Joomla! CMS versions 3.4.4 through 3.6.3

Solution

Upgrade to version 3.6.4

Contact

The JSST at the Joomla! Security Centre.

Reported By: Davide Tampellini
Categorías: Joomla

[20161001] - Core - Account Creation

Joomla Security - Mar, 10/25/2016 - 21:00
  • Project: Joomla!
  • SubProject: CMS
  • Severity: High
  • Versions: 3.4.4 through 3.6.3
  • Exploit type: Account Creation
  • Reported Date: 2016-October-18
  • Fixed Date: 2016-October-25
  • CVE Number: CVE-2016-8870
Description

Inadequate checks allows for users to register on a site when registration has been disabled.

Affected Installs

Joomla! CMS versions 3.4.4 through 3.6.3

Solution

Upgrade to version 3.6.4

Contact

The JSST at the Joomla! Security Centre.

Reported By: Demis Palma
Categorías: Joomla