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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)