Important: ruby

Issue Overview:

An issue was discovered in RubyGems 2.6 and later through 3.0.2. The gem owner command outputs the contents of the API response directly to stdout. Therefore, if the response is crafted, escape sequence injection may occur. (CVE-2019-8322)

An issue was discovered in RubyGems 2.6 and later through 3.0.2. Gem::GemcutterUtilities#with_response may output the API response to stdout as it is. Therefore, if the API side modifies the response, escape sequence injection may occur. (CVE-2019-8323)

An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since Gem::CommandManager#run calls alert_error without escaping, escape sequence injection is possible. (There are many ways to cause an error.) (CVE-2019-8325)

An issue was discovered in RubyGems 2.6 and later through 3.0.2. A crafted gem with a multi-line name is not handled correctly. Therefore, an attacker could inject arbitrary code to the stub line of gemspec, which is eval-ed by code in ensure_loadable_spec during the preinstall check. (CVE-2019-8324)

Affected Packages:

ruby

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

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

New Packages:

aarch64:  
    ruby-2.0.0.648-35.amzn2.0.1.aarch64  
    ruby-devel-2.0.0.648-35.amzn2.0.1.aarch64  
    ruby-libs-2.0.0.648-35.amzn2.0.1.aarch64  
    rubygem-bigdecimal-1.2.0-35.amzn2.0.1.aarch64  
    rubygem-io-console-0.4.2-35.amzn2.0.1.aarch64  
    rubygem-json-1.7.7-35.amzn2.0.1.aarch64  
    rubygem-psych-2.0.0-35.amzn2.0.1.aarch64  
    ruby-tcltk-2.0.0.648-35.amzn2.0.1.aarch64  
    ruby-debuginfo-2.0.0.648-35.amzn2.0.1.aarch64  
  
i686:  
    ruby-2.0.0.648-35.amzn2.0.1.i686  
    ruby-devel-2.0.0.648-35.amzn2.0.1.i686  
    ruby-libs-2.0.0.648-35.amzn2.0.1.i686  
    rubygem-bigdecimal-1.2.0-35.amzn2.0.1.i686  
    rubygem-io-console-0.4.2-35.amzn2.0.1.i686  
    rubygem-json-1.7.7-35.amzn2.0.1.i686  
    rubygem-psych-2.0.0-35.amzn2.0.1.i686  
    ruby-tcltk-2.0.0.648-35.amzn2.0.1.i686  
    ruby-debuginfo-2.0.0.648-35.amzn2.0.1.i686  
  
noarch:  
    rubygems-2.0.14.1-35.amzn2.0.1.noarch  
    rubygems-devel-2.0.14.1-35.amzn2.0.1.noarch  
    rubygem-rake-0.9.6-35.amzn2.0.1.noarch  
    ruby-irb-2.0.0.648-35.amzn2.0.1.noarch  
    rubygem-rdoc-4.0.0-35.amzn2.0.1.noarch  
    ruby-doc-2.0.0.648-35.amzn2.0.1.noarch  
    rubygem-minitest-4.3.2-35.amzn2.0.1.noarch  
  
src:  
    ruby-2.0.0.648-35.amzn2.0.1.src  
  
x86_64:  
    ruby-2.0.0.648-35.amzn2.0.1.x86_64  
    ruby-devel-2.0.0.648-35.amzn2.0.1.x86_64  
    ruby-libs-2.0.0.648-35.amzn2.0.1.x86_64  
    rubygem-bigdecimal-1.2.0-35.amzn2.0.1.x86_64  
    rubygem-io-console-0.4.2-35.amzn2.0.1.x86_64  
    rubygem-json-1.7.7-35.amzn2.0.1.x86_64  
    rubygem-psych-2.0.0-35.amzn2.0.1.x86_64  
    ruby-tcltk-2.0.0.648-35.amzn2.0.1.x86_64  
    ruby-debuginfo-2.0.0.648-35.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2019-8322, CVE-2019-8323, CVE-2019-8324, CVE-2019-8325

Mitre: CVE-2019-8322, CVE-2019-8323, CVE-2019-8324, CVE-2019-8325