Medium: ruby

Issue Overview:

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a “StartTLS stripping attack.” (CVE-2021-32066)

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-2.0.0.648-36.amzn2.0.10.aarch64  
    ruby-devel-2.0.0.648-36.amzn2.0.10.aarch64  
    ruby-libs-2.0.0.648-36.amzn2.0.10.aarch64  
    rubygem-bigdecimal-1.2.0-36.amzn2.0.10.aarch64  
    rubygem-io-console-0.4.2-36.amzn2.0.10.aarch64  
    rubygem-json-1.7.7-36.amzn2.0.10.aarch64  
    rubygem-psych-2.0.0-36.amzn2.0.10.aarch64  
    ruby-tcltk-2.0.0.648-36.amzn2.0.10.aarch64  
    ruby-debuginfo-2.0.0.648-36.amzn2.0.10.aarch64  
  
i686:  
    ruby-2.0.0.648-36.amzn2.0.10.i686  
    ruby-devel-2.0.0.648-36.amzn2.0.10.i686  
    ruby-libs-2.0.0.648-36.amzn2.0.10.i686  
    rubygem-bigdecimal-1.2.0-36.amzn2.0.10.i686  
    rubygem-io-console-0.4.2-36.amzn2.0.10.i686  
    rubygem-json-1.7.7-36.amzn2.0.10.i686  
    rubygem-psych-2.0.0-36.amzn2.0.10.i686  
    ruby-tcltk-2.0.0.648-36.amzn2.0.10.i686  
    ruby-debuginfo-2.0.0.648-36.amzn2.0.10.i686  
  
noarch:  
    rubygems-2.0.14.1-36.amzn2.0.10.noarch  
    rubygems-devel-2.0.14.1-36.amzn2.0.10.noarch  
    rubygem-rake-0.9.6-36.amzn2.0.10.noarch  
    ruby-irb-2.0.0.648-36.amzn2.0.10.noarch  
    rubygem-rdoc-4.0.0-36.amzn2.0.10.noarch  
    ruby-doc-2.0.0.648-36.amzn2.0.10.noarch  
    rubygem-minitest-4.3.2-36.amzn2.0.10.noarch  
  
src:  
    ruby-2.0.0.648-36.amzn2.0.10.src  
  
x86_64:  
    ruby-2.0.0.648-36.amzn2.0.10.x86_64  
    ruby-devel-2.0.0.648-36.amzn2.0.10.x86_64  
    ruby-libs-2.0.0.648-36.amzn2.0.10.x86_64  
    rubygem-bigdecimal-1.2.0-36.amzn2.0.10.x86_64  
    rubygem-io-console-0.4.2-36.amzn2.0.10.x86_64  
    rubygem-json-1.7.7-36.amzn2.0.10.x86_64  
    rubygem-psych-2.0.0-36.amzn2.0.10.x86_64  
    ruby-tcltk-2.0.0.648-36.amzn2.0.10.x86_64  
    ruby-debuginfo-2.0.0.648-36.amzn2.0.10.x86_64  

Additional References

Red Hat: CVE-2021-32066

Mitre: CVE-2021-32066