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: 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.

Reported By: Daniel le Gall, Fix coordinated by Oliver Hader from TYPO3
  • 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.

Reported By: Jose Antonio Rodriguez Garcia and Phil Keeble (MWR InfoSecurity)
  • 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.

Reported By: Michał Gołębiowski-Owczarek, David Jardin (JSST)
  • 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.

Reported By: Benjamin Trenkle (JSST)
  • 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.

Reported By: Haboob Research Team
  • 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.

Reported By: Sven Hurt, Benjamin Trenkle
  • 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.

Reported By: Fouad Maakor
  • 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.

Reported By: Fouad Maakor
  • 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.

Reported By: Mario Korth, Hackmanit
  • 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.

Reported By: David Jardin (JSST)