Ubuntu 3621-2: Ruby regression

    Date13 Apr 2018
    CategoryUbuntu
    4926
    Posted ByAnthony Pell
    USN-3621-1 caused a regression in Ruby.
    ==========================================================================
    Ubuntu Security Notice USN-3621-2
    April 13, 2018
    
    ruby1.9.1, ruby2.0 regression
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 LTS
    
    Summary:
    
    USN-3621-1 caused a regression in Ruby.
    
    Software Description:
    - ruby1.9.1: Object-oriented scripting language
    - ruby2.0: Object-oriented scripting language
    
    Details:
    
    USN-3621-1 fixed vulnerabilities in Ruby. The update caused an issue
    due to an incomplete patch for CVE-2018-1000074. This update reverts
    the problematic patch pending further investigation.
    
    We apologize for the inconvenience.
    
    Original advisory details:
    
     It was discovered that Ruby incorrectly handled certain inputs. An
     attacker could possibly use this to access sensitive information.
     (CVE-2018-1000073)
    
     It was discovered that Ruby incorrectly handled certain files. An
     attacker could possibly use this to execute arbitrary code. 
     (CVE-2018-1000074)
    
     It was discovered that Ruby incorrectly handled certain files. An
     attacker could possibly use this to cause a denial of service. 
     (CVE-2018-1000075)
    
     It was discovered that Ruby incorrectly handled certain crypto
     signatures. An attacker could possibly use this to execute arbitrary
     code. (CVE-2018-1000076)
    
     It was discovered that Ruby incorrectly handled certain inputs. An
     attacker could possibly use this to execute arbitrary code. 
     (CVE-2018-1000077, CVE-2018-1000078, CVE-2018-1000079)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 LTS:
      libruby1.9.1                    1.9.3.484-2ubuntu1.10
      libruby2.0                      2.0.0.484-1ubuntu2.8
      ruby1.9.1                       1.9.3.484-2ubuntu1.10
      ruby1.9.3                       1.9.3.484-2ubuntu1.10
      ruby2.0                         2.0.0.484-1ubuntu2.8
    
    In general, a standard system update will make all the necessary
    changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3621-2
      https://usn.ubuntu.com/usn/usn-3621-1
      CVE-2018-1000074
    
    Package Information:
      https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.484-2ubuntu1.10
      https://launchpad.net/ubuntu/+source/ruby2.0/2.0.0.484-1ubuntu2.8
    
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