Amazon Linux 2 Security Advisory: ALAS-2019-1249
Advisory Release Date: 2019-07-18 18:14 Pacific
Advisory Updated Date: 2019-07-22 16:49 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
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.
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