ALAS-2021-1468


Amazon Linux AMI Security Advisory: ALAS-2021-1468
Advisory Release Date: 2021-01-12 22:51 Pacific
Advisory Updated Date: 2021-01-13 18:21 Pacific
Severity: Medium
References: CVE-2020-25613 

Issue Overview:

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:

ruby20


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

New Packages:
i686:
    rubygem20-io-console-0.4.2-2.39.amzn1.i686
    rubygem20-bigdecimal-1.2.0-2.39.amzn1.i686
    ruby20-2.0.0.648-2.39.amzn1.i686
    ruby20-debuginfo-2.0.0.648-2.39.amzn1.i686
    ruby20-libs-2.0.0.648-2.39.amzn1.i686
    ruby20-devel-2.0.0.648-2.39.amzn1.i686
    rubygem20-psych-2.0.0-2.39.amzn1.i686

noarch:
    ruby20-irb-2.0.0.648-2.39.amzn1.noarch
    rubygems20-devel-2.0.14.1-2.39.amzn1.noarch
    rubygems20-2.0.14.1-2.39.amzn1.noarch
    ruby20-doc-2.0.0.648-2.39.amzn1.noarch

src:
    ruby20-2.0.0.648-2.39.amzn1.src

x86_64:
    ruby20-2.0.0.648-2.39.amzn1.x86_64
    rubygem20-bigdecimal-1.2.0-2.39.amzn1.x86_64
    ruby20-debuginfo-2.0.0.648-2.39.amzn1.x86_64
    ruby20-devel-2.0.0.648-2.39.amzn1.x86_64
    ruby20-libs-2.0.0.648-2.39.amzn1.x86_64
    rubygem20-psych-2.0.0-2.39.amzn1.x86_64
    rubygem20-io-console-0.4.2-2.39.amzn1.x86_64