Medium: ruby19

Issue Overview:

Algorithmic complexity vulnerability in Gem::Version::ANCHORED_VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.2, 1.8.24 through 1.8.26, 2.0.x before 2.0.10, and 2.1.x before 2.1.5, as used in Ruby 1.9.0 through 2.0.0p247, allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression. NOTE: this issue is due to an incomplete fix for CVE-2013-4287.

Affected Packages:

ruby19

Issue Correction:
Run yum update ruby19 to update your system.

New Packages:

i686:  
    rubygem19-io-console-0.3-32.60.amzn1.i686  
    ruby19-doc-1.9.3.545-32.60.amzn1.i686  
    rubygem19-bigdecimal-1.1.0-32.60.amzn1.i686  
    ruby19-libs-1.9.3.545-32.60.amzn1.i686  
    ruby19-1.9.3.545-32.60.amzn1.i686  
    ruby19-debuginfo-1.9.3.545-32.60.amzn1.i686  
    ruby19-devel-1.9.3.545-32.60.amzn1.i686  
    rubygem19-json-1.5.5-32.60.amzn1.i686  
  
noarch:  
    rubygem19-rake-0.9.2.2-32.60.amzn1.noarch  
    rubygem19-rdoc-3.9.5-32.60.amzn1.noarch  
    rubygems19-devel-1.8.23.2-32.60.amzn1.noarch  
    rubygem19-minitest-2.5.1-32.60.amzn1.noarch  
    rubygems19-1.8.23.2-32.60.amzn1.noarch  
    ruby19-irb-1.9.3.545-32.60.amzn1.noarch  
  
src:  
    ruby19-1.9.3.545-32.60.amzn1.src  
  
x86_64:  
    rubygem19-bigdecimal-1.1.0-32.60.amzn1.x86_64  
    rubygem19-json-1.5.5-32.60.amzn1.x86_64  
    ruby19-doc-1.9.3.545-32.60.amzn1.x86_64  
    ruby19-devel-1.9.3.545-32.60.amzn1.x86_64  
    ruby19-debuginfo-1.9.3.545-32.60.amzn1.x86_64  
    ruby19-libs-1.9.3.545-32.60.amzn1.x86_64  
    rubygem19-io-console-0.3-32.60.amzn1.x86_64  
    ruby19-1.9.3.545-32.60.amzn1.x86_64  

Additional References

Red Hat: CVE-2013-4363

Mitre: CVE-2013-4363