• [20190502] - Core - By-passing protection of Phar Stream Wrapper Interceptor

    Posted: 07 May 2019 05:00 PM PDT

    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

    [20190501] - Core - XSS in com_users ACL debug views

    Posted: 07 May 2019 08:00 AM PDT

    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

How to Upgrade Joomla Tutorial at Joomla.org

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