• Avviso sicurezza: [20180602] - Core - XSS vulnerability in language switcher module
    • Project: Joomla!
    • SubProject: CMS
    • Impact: Low
    • Severity: Low
    • Versions: 1.6.0 through 3.8.8
    • Exploit type: XSS
    • Reported Date: 2018-May-07
    • Fixed Date: 2018-June-26
    • CVE Number: CVE-2018-12711

    Description

    In some cases the link of the current language might contain unescaped HTML special characters. This may lead to reflective XSS via injection of arbitrary parameters and/or values on the current page url.

    Affected Installs

    Joomla! CMS versions 1.6.0 through 3.8.8

    Solution

    Upgrade to version 3.8.9

    Contact

    The JSST at the Joomla! Security Centre.

    Reported By: Borja Lorenzo, Innotecsystem

  • Avviso sicurezza: [20180601] - Core - Local File Inclusion with PHP 5.3
    • Project: Joomla!
    • SubProject: CMS
    • Impact: Low
    • Severity: Low
    • Versions: 2.5.0 through 3.8.8
    • Exploit type: LFI
    • Reported Date: 2018-April-23
    • Fixed Date: 2018-June-26
    • CVE Number: CVE-2018-12712

    Description

    Our autoload code checks classnames to be valid, using the "class_exists" function in PHP. In PHP 5.3 this function validates invalid names as valid, which can result in a Local File Inclusion.

    Affected Installs

    Joomla! CMS versions 2.5.0 through 3.8.8

    Solution

    Upgrade to version 3.8.9

    Contact

    The JSST at the Joomla! Security Centre.

    Reported By: Davide Tampellini

  • Avviso sicurezza: [20180509] - Core - XSS vulnerability in the media manager
    • Project: Joomla!
    • SubProject: CMS
    • Impact: Low
    • Severity: Low
    • Versions: 1.5.0 through 3.8.7
    • Exploit type: XSS
    • Reported Date: 2017-October-28
    • Fixed Date: 2018-May-22
    • CVE Number: CVE-2018-6378

    Description

    Inadequate filtering of file and folder names lead to various XSS attack vectors in the media manager.

    Affected Installs

    Joomla! CMS versions 1.5.0 through 3.8.7

    Solution

    Upgrade to version 3.8.8

    Contact

    The JSST at the Joomla! Security Centre.

    Reported By: David Jardin, JSST

  • Avviso sicurezza: [20180508] - Core - Possible XSS attack in the redirect method
    • Project: Joomla!
    • SubProject: CMS
    • Impact: Low
    • Severity: Low
    • Versions: 3.1.2 through 3.8.7
    • Exploit type: XSS
    • Reported Date: 2018-March-30
    • Fixed Date: 2018-May-22
    • CVE Number: CVE-2018-11328

    Description

    Under specific circumstances (a redirect issued with a URI containing a username and password when the Location: header cannot be used), a lack of escaping the user-info component of the URI could result in a XSS vulnerability.

    Affected Installs

    Joomla! CMS versions 3.1.2 through 3.8.7

    Solution

    Upgrade to version 3.8.8

    Contact

    The JSST at the Joomla! Security Centre.

    Reported By: David Jardin, JSST

  • Avviso sicurezza: [20180507] - Core - Session deletion race condition
    • Project: Joomla!
    • SubProject: CMS
    • Impact: Medium
    • Severity: Low
    • Versions: 3.0.0 through 3.8.7
    • Exploit type: Session race condition
    • Reported Date: 2017-July-08
    • Fixed Date: 2018-May-22
    • CVE Number: CVE-2018-11324

    Description

    A long running background process, such as remote checks for core or extension updates, could create a race condition where a session which was expected to be destroyed would be recreated.

    Affected Installs

    Joomla! CMS versions 3.0.0 through 3.8.7

    Solution

    Upgrade to version 3.8.8

    Additional Resources

    Contact

    The JSST at the Joomla! Security Centre.

    Reported By: David Jardin, JSST

  • Avviso sicurezza: [20180506] - Core - Filter field in com_fields allows remote code execution
    • Project: Joomla!
    • SubProject: CMS
    • Impact: Moderate
    • Severity: Low
    • Versions: 3.7.0 through 3.8.7
    • Exploit type: Remote Code Execution
    • Reported Date: 2018-May-14
    • Fixed Date: 2018-May-22
    • CVE Number: CVE-2018-11321

    Description

    Inadequate filtering allows users authorised to create custom fields to manipulate the filtering options and inject an unvalidated option.

    Affected Installs

    Joomla! CMS versions 3.7.0 through 3.8.7

    Solution

    Upgrade to version 3.8.8

    Contact

    The JSST at the Joomla! Security Centre.

    Reported By: Benjamin Trenkle, JSST

  • Avviso sicurezza: [20180505] - Core - XSS Vulnerabilities & additional hardening
    • Project: Joomla!
    • SubProject: CMS
    • Impact: Moderate
    • Severity: Moderate
    • Versions: 3.0.0 through 3.8.7
    • Exploit type:XSS
    • Reported Date:2018-February-02 & 2018-March-27
    • Fixed Date: 2018-May-22
    • CVE Number: CVE-2018-11326

    Description

    Inadequate input filtering leads to multiple XSS vulnerabilities. Additionally, the default filtering settings could potentially allow users of the default Administrator user group to perform a XSS attack.

    Affected Installs

    Joomla! CMS versions 3.0.0 through 3.8.7

    Solution

    Upgrade to version 3.8.8

    Additional Resources

    Contact

    The JSST at the Joomla! Security Centre.

    Reported By: Kai Zhao of 3H Security Team & Zhouyuan Yang (FortiGuard Labs)

  • Avviso sicurezza: [20180504] - Core - Installer leaks plain text password to local user
    • Project: Joomla!
    • SubProject: CMS
    • Impact: Low
    • Severity: Low
    • Versions: 3.0.0 through 3.8.7
    • Exploit type: Information Disclosure
    • Reported Date: 2018-February-09
    • Fixed Date: 2018-May-22
    • CVE Number: CVE-2018-11325

    Description

    The web install application would autofill password fields after either a form validation error or navigating to a previous install step, and displays the plain text password for the administrator account at the confirmation screen.

    Affected Installs

    Joomla! CMS versions 3.0.0 through 3.8.7

    Solution

    Upgrade to version 3.8.8

    Contact

    The JSST at the Joomla! Security Centre.

    Reported By: Sascha Egerer

  • Avviso sicurezza: [20180503] - Core - Information Disclosure about unpublished tags
    • Project: Joomla!
    • SubProject: CMS
    • Impact: Low
    • Severity: Moderate
    • Versions: 3.1.0 through 3.8.7
    • Exploit type: Information Disclosure
    • Reported Date: 2018-April-27
    • Fixed Date: 2018-May-22
    • CVE Number: CVE-2018-11327

    Description

    Inadequate checks allowed users to see the names of tags that were either unpublished or published with restricted view permission .

    Affected Installs

    Joomla! CMS versions 3.1.0 through 3.8.7

    Solution

    Upgrade to version 3.8.8

    Contact

    The JSST at the Joomla! Security Centre.

    Reported By: Phil Taylor, JSST

  • Avviso sicurezza: [20180502] - Core - Add PHAR files to the upload blacklist
    • Project: Joomla!
    • SubProject: CMS
    • Impact: High
    • Severity: Low
    • Versions: 2.5.0 through 3.8.7
    • Exploit type: Malicious file upload
    • Reported Date: 2018-March-14
    • Fixed Date: 2018-May-22
    • CVE Number: CVE-2018-11322

    Description

    Depending on the server configuration, PHAR files might be handled as executable PHP scripts by the webserver.

    Affected Installs

    Joomla! CMS versions 2.5.0 through 3.8.7

    Solution

    Upgrade to version 3.8.8

    Contact

    The JSST at the Joomla! Security Centre.

    Reported By: Demis Palma, JSST

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