Ubuntu 1583-1: Ruby vulnerabilities

    Date25 Sep 2012
    CategoryUbuntu
    31
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in ruby1.9.1
    ==========================================================================
    Ubuntu Security Notice USN-1583-1
    September 26, 2012
    
    ruby1.9.1 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 LTS
    
    Summary:
    
    Several security issues were fixed in ruby1.9.1
    
    Software Description:
    - ruby1.9.1: Interpreter of object-oriented scripting language Ruby
    
    Details:
    
    It was discovered that Ruby incorrectly allowed untainted strings to be
    modified in protective safe levels. An attacker could use this flaw to bypass
    intended access restrictions. (CVE-2011-1005)
    
    John Firebaugh discovered that the RubyGems remote gem fetcher did not properly
    verify SSL certificates. A remote attacker could exploit this to perform a man
    in the middle attack to alter gem files being downloaded for installation.
    (CVE-2012-2126)
    
    John Firebaugh discovered that the RubyGems remote gem fetcher allowed
    redirection from HTTPS to HTTP. A remote attacker could exploit this to perform
    a man in the middle attack to alter gem files being downloaded for
    installation. (CVE-2012-2125)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 LTS:
      libruby1.9.1                    1.9.3.0-1ubuntu2.2
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1583-1
      CVE-2011-1005, CVE-2012-2125, CVE-2012-2126
    
    Package Information:
      https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.0-1ubuntu2.2
    
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