Linux Security
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    Ubuntu 4562-2: kramdown vulnerability

    Date 26 Oct 2020
    91
    Posted By LinuxSecurity Advisories
    kramdown could be made to crash, run programs, or leak sensitive information if it opened a specially crafted file.
    ==========================================================================
    Ubuntu Security Notice USN-4562-2
    October 26, 2020
    
    ruby-kramdown vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 20.10
    
    Summary:
    
    kramdown could be made to crash, run programs, or leak sensitive information if
    it opened a specially crafted file.
    
    Software Description:
    - ruby-kramdown: Fast, pure-Ruby Markdown-superset converter - ruby library
    
    Details:
    
    It was discovered that kramdown insecurely handled certain crafted input. An
    attacker could use this vulnerability to read restricted files or execute
    arbitrary code.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 20.10:
      kramdown                        1.17.0-4ubuntu0.20.10.1
      ruby-kramdown                   1.17.0-4ubuntu0.20.10.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4562-2
      https://usn.ubuntu.com/4562-1
      CVE-2020-14001
    
    Package Information:
      https://launchpad.net/ubuntu/+source/ruby-kramdown/1.17.0-4ubuntu0.20.10.1
    
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