ALAS2-2021-1641


Amazon Linux 2 Security Advisory: ALAS-2021-1641
Advisory Release Date: 2021-05-20 16:29 Pacific
Advisory Updated Date: 2021-05-24 18:00 Pacific
Severity: Medium

Issue Overview:

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 )

An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack. (CVE-2020-25613 )


Affected Packages:

ruby


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

New Packages:
aarch64:
    ruby-2.0.0.648-36.amzn2.0.2.aarch64
    ruby-devel-2.0.0.648-36.amzn2.0.2.aarch64
    ruby-libs-2.0.0.648-36.amzn2.0.2.aarch64
    rubygem-bigdecimal-1.2.0-36.amzn2.0.2.aarch64
    rubygem-io-console-0.4.2-36.amzn2.0.2.aarch64
    rubygem-json-1.7.7-36.amzn2.0.2.aarch64
    rubygem-psych-2.0.0-36.amzn2.0.2.aarch64
    ruby-tcltk-2.0.0.648-36.amzn2.0.2.aarch64
    ruby-debuginfo-2.0.0.648-36.amzn2.0.2.aarch64

i686:
    ruby-2.0.0.648-36.amzn2.0.2.i686
    ruby-devel-2.0.0.648-36.amzn2.0.2.i686
    ruby-libs-2.0.0.648-36.amzn2.0.2.i686
    rubygem-bigdecimal-1.2.0-36.amzn2.0.2.i686
    rubygem-io-console-0.4.2-36.amzn2.0.2.i686
    rubygem-json-1.7.7-36.amzn2.0.2.i686
    rubygem-psych-2.0.0-36.amzn2.0.2.i686
    ruby-tcltk-2.0.0.648-36.amzn2.0.2.i686
    ruby-debuginfo-2.0.0.648-36.amzn2.0.2.i686

noarch:
    rubygems-2.0.14.1-36.amzn2.0.2.noarch
    rubygems-devel-2.0.14.1-36.amzn2.0.2.noarch
    rubygem-rake-0.9.6-36.amzn2.0.2.noarch
    ruby-irb-2.0.0.648-36.amzn2.0.2.noarch
    rubygem-rdoc-4.0.0-36.amzn2.0.2.noarch
    ruby-doc-2.0.0.648-36.amzn2.0.2.noarch
    rubygem-minitest-4.3.2-36.amzn2.0.2.noarch

src:
    ruby-2.0.0.648-36.amzn2.0.2.src

x86_64:
    ruby-2.0.0.648-36.amzn2.0.2.x86_64
    ruby-devel-2.0.0.648-36.amzn2.0.2.x86_64
    ruby-libs-2.0.0.648-36.amzn2.0.2.x86_64
    rubygem-bigdecimal-1.2.0-36.amzn2.0.2.x86_64
    rubygem-io-console-0.4.2-36.amzn2.0.2.x86_64
    rubygem-json-1.7.7-36.amzn2.0.2.x86_64
    rubygem-psych-2.0.0-36.amzn2.0.2.x86_64
    ruby-tcltk-2.0.0.648-36.amzn2.0.2.x86_64
    ruby-debuginfo-2.0.0.648-36.amzn2.0.2.x86_64