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Security Announcements

  1. [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
  2. [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
  3. [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
  4. [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
  5. [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

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