Linux Security
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    Linux Security

    Ubuntu 4561-1: Rack vulnerabilities

    Date
    110
    Posted By
    Rack could be made to expose sensitive information over the network.
    ==========================================================================
    Ubuntu Security Notice USN-4561-1
    September 30, 2020
    
    ruby-rack vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 LTS
    
    Summary:
    
    Rack could be made to expose sensitive information over the network.
    
    Software Description:
    - ruby-rack: modular Ruby webserver interface
    
    Details:
    
    It was discovered that Rack incorrectly handled certain paths. An attacker
    could possibly use this issue to obtain sensitive information.
    (CVE-2020-8161)
    
    It was discovered that Rack incorrectly validated cookies. An attacker
    could possibly use this issue to forge a secure cookie. (CVE-2020-8184)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.04 LTS:
      ruby-rack                       1.6.4-4ubuntu0.2
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4561-1
      CVE-2020-8161, CVE-2020-8184
    
    Package Information:
      https://launchpad.net/ubuntu/+source/ruby-rack/1.6.4-4ubuntu0.2
    

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