Linux Security
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    Ubuntu 4505-1: PHPMailer vulnerability

    Date
    104
    Posted By
    Attachments with specially crafted filenames could bypass filename-based mail attachment filters.
    ==========================================================================
    Ubuntu Security Notice USN-4505-1
    September 16, 2020
    
    libphp-phpmailer vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 LTS
    
    Summary:
    
    Attachments with specially crafted filenames could bypass filename-based
    mail attachment filters.
    
    Software Description:
    - libphp-phpmailer: full featured email transfer class for PHP
    
    Details:
    
    Elar Lang discovered that PHPMailer did not properly escape double quote
    characters in filenames. A remote attacker could possibly exploit this
    with a crafted filename to bypass attachment filters that are based on
    matching filename extensions. (CVE-2020-13625)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.04 LTS:
      libphp-phpmailer                5.2.14+dfsg-2.3+deb9u2build0.18.04.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4505-1
      CVE-2020-13625
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libphp-phpmailer/5.2.14+dfsg-2.3+deb9u2build0.18.04.1
    
    
    

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