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    Ubuntu 4498-1: Loofah vulnerability

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    Loofah could be made to perform XSS attacks if a crafted SVG element is republished
    ==========================================================================
    Ubuntu Security Notice USN-4498-1
    September 15, 2020
    
    ruby-loofah vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Loofah could be made to perform XSS attacks if a crafted SVG element is
    republished
    
    Software Description:
    - ruby-loofah: manipulation and transformation of HTML/XML documents and
    fragments
    
    Details:
    
    It was discovered that Loofah does not properly sanitize JavaScript in
    sanitized output. An attacker could possibly use this issue to perform
    XSS attacks. (CVE-2019-15587)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      ruby-loofah                     2.0.3-2+deb9u3build0.16.04.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4498-1
      CVE-2019-15587
    
    Package Information:
    
    https://launchpad.net/ubuntu/+source/ruby-loofah/2.0.3-2+deb9u3build0.16.04.1
    
    

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