ALAS-2021-1505


Amazon Linux AMI Security Advisory: ALAS-2021-1505
Advisory Release Date: 2021-05-20 21:12 Pacific
Advisory Updated Date: 2021-05-21 18:50 Pacific
Severity: Low
References: CVE-2021-31799 

Issue Overview:

RDoc before version 6.3.1 used to call Kernel#open to open a local file. If a Ruby project has a file whose name starts with "|" and ends with "tags", the command following the pipe character is executed. A malicious Ruby project could exploit it to run an arbitrary command execution against a user who attempts to run the rdoc command. (CVE-2021-31799)


Affected Packages:

ruby20


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

New Packages:
i686:
    rubygem20-io-console-0.4.2-2.40.amzn1.i686
    rubygem20-bigdecimal-1.2.0-2.40.amzn1.i686
    ruby20-2.0.0.648-2.40.amzn1.i686
    rubygem20-psych-2.0.0-2.40.amzn1.i686
    ruby20-debuginfo-2.0.0.648-2.40.amzn1.i686
    ruby20-libs-2.0.0.648-2.40.amzn1.i686
    ruby20-devel-2.0.0.648-2.40.amzn1.i686

noarch:
    rubygems20-devel-2.0.14.1-2.40.amzn1.noarch
    rubygems20-2.0.14.1-2.40.amzn1.noarch
    ruby20-irb-2.0.0.648-2.40.amzn1.noarch
    ruby20-doc-2.0.0.648-2.40.amzn1.noarch

src:
    ruby20-2.0.0.648-2.40.amzn1.src

x86_64:
    ruby20-libs-2.0.0.648-2.40.amzn1.x86_64
    rubygem20-psych-2.0.0-2.40.amzn1.x86_64
    ruby20-2.0.0.648-2.40.amzn1.x86_64
    ruby20-debuginfo-2.0.0.648-2.40.amzn1.x86_64
    rubygem20-io-console-0.4.2-2.40.amzn1.x86_64
    ruby20-devel-2.0.0.648-2.40.amzn1.x86_64
    rubygem20-bigdecimal-1.2.0-2.40.amzn1.x86_64