Medium: ruby20

Issue Overview:

An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats. (CVE-2018-16396)

The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent. (CVE-2020-10663)

Affected Packages:

ruby20

Issue Correction:
Run yum update ruby20 to update your system.

New Packages:

i686:  
    ruby20-libs-2.0.0.648-1.33.amzn1.i686  
    ruby20-debuginfo-2.0.0.648-1.33.amzn1.i686  
    rubygem20-psych-2.0.0-1.33.amzn1.i686  
    ruby20-2.0.0.648-1.33.amzn1.i686  
    rubygem20-io-console-0.4.2-1.33.amzn1.i686  
    ruby20-devel-2.0.0.648-1.33.amzn1.i686  
    rubygem20-bigdecimal-1.2.0-1.33.amzn1.i686  
  
noarch:  
    rubygems20-2.0.14.1-1.33.amzn1.noarch  
    rubygems20-devel-2.0.14.1-1.33.amzn1.noarch  
    ruby20-doc-2.0.0.648-1.33.amzn1.noarch  
    ruby20-irb-2.0.0.648-1.33.amzn1.noarch  
  
src:  
    ruby20-2.0.0.648-1.33.amzn1.src  
  
x86_64:  
    ruby20-libs-2.0.0.648-1.33.amzn1.x86_64  
    rubygem20-io-console-0.4.2-1.33.amzn1.x86_64  
    rubygem20-psych-2.0.0-1.33.amzn1.x86_64  
    ruby20-devel-2.0.0.648-1.33.amzn1.x86_64  
    ruby20-debuginfo-2.0.0.648-1.33.amzn1.x86_64  
    ruby20-2.0.0.648-1.33.amzn1.x86_64  
    rubygem20-bigdecimal-1.2.0-1.33.amzn1.x86_64  

Additional References

Red Hat: CVE-2018-16396, CVE-2020-10663

Mitre: CVE-2018-16396, CVE-2020-10663