An issue was discovered in Joomla! before 3.9.3. The phar:// stream wrapper can be used for objection injection attacks because there is no protection mechanism (such as the TYPO3 PHAR stream wrapper) to prevent use of the phar:// handler for non .phar-files.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - An issue was discovered in Joomla! before 3.9.3. The phar:// stream wrapper can be used for objection
    injection attacks because there is no protection mechanism (such as the TYPO3 PHAR stream wrapper) to
    prevent use of the phar:// handler for non .phar-files. (CVE-2019-7743)

According to its self-reported version number, the Joomla! installation running on the remote web server is prior to 3.9.3. It is, therefore, affected by multiple vulnerabilities:

 - An object injection vulnerability exists in Joomla! prior to 3.9.3   due to the absence of a protection mechanism to prevent the use of   the phar:// handler for non .phar files. An unauthenticated, remote   attacker can exploit this to include arbitrary files (CVE-2019-7743).

 - A cross-site scripting (XSS) vulnerability exists due to improper  validation of user-supplied input before returning it to users.  An unauthenticated, remote attacker can exploit this, by convincing  a user to click a specially crafted URL, to execute arbitrary script  code in a user's browser session (CVE-2019-7740, CVE-2019-7741,  CVE-2019-7744).

 - An issue exists in Joomla! prior to 3.9.3. The 'No Filtering'   textfilter overrides child settings in the Global Configuration.
  This is intended behavior. However, it might be unexpected for   the user because the configuration dialog lacks an additional   message to explain this (CVE-2019-7739).

Note that Nessus has not attempted to exploit these issues but has instead relied only on the application's self-reported version number.

According to its self-reported version number, the detected Joomla! application is affected by multiple vulnerabilities :

 - XSS in URL fields in various core components affects Joomla 2.5.0 through 3.9.2

 - XSS in browserside mime-type sniffing affects Joomla 1.0.0 through 3.9.2

 - "No Filtering" textfilter overriding child settings in the Global Configuration affects Joomla 2.5.0 through 3.9.2

 - Stored XSS issue in the Global Configuration help url affects Joomla 2.5.0 through 3.9.2

 - XSS Issue in core.js writeDynaList affects Joomla 2.5.0 through 3.9.2

 - phar:// stream wrapper used for object injection attacks affects Joomla 2.5.0 through 3.9.2

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
432274	SCA: security update for joomla/joomla-cms (GHSA-5m3w-rvvh-8fx6)	Tenable Cloud Security	SCA Checks	critical
432274	SCA: security update for joomla/joomla-cms (GHSA-5m3w-rvvh-8fx6)	Tenable Self-Hosted Container Security	SCA Checks	critical
122346	Joomla! 2.5.0 < 3.9.3 Multiple Vulnerabilities	Nessus	CGI abuses	critical
98521	Joomla! 1.0.x < 3.9.3 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	critical

Detections

Analytics

CVE-2019-7743

critical

Tenable Plugins

critical

critical

critical

critical