Medium: ruby20

2015-06-16T10:30:00
ID ALAS-2015-547
Type amazon
Reporter Amazon
Modified 2015-06-16T12:51:00

Description

Issue Overview:

RubyGems provides the ability of a domain to direct clients to a separate host that is used to fetch gems and make API calls against. This mechanism is implemented via DNS, specificly a SRV record _rubygems._tcp under the original requested domain. RubyGems did not validate the hostname returned in the SRV record before sending requests to it. (CVE-2015-3900 __)

As discussed upstream, CVE-2015-4020 __ is due to an incomplete fix for CVE-2015-3900 __, which allowed redirection to an arbitrary gem server in any security domain.

Affected Packages:

ruby20

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

New Packages:

i686:  
    ruby20-2.0.0.645-1.27.amzn1.i686  
    ruby20-devel-2.0.0.645-1.27.amzn1.i686  
    ruby20-debuginfo-2.0.0.645-1.27.amzn1.i686  
    rubygem20-io-console-0.4.2-1.27.amzn1.i686  
    rubygem20-bigdecimal-1.2.0-1.27.amzn1.i686  
    ruby20-libs-2.0.0.645-1.27.amzn1.i686  
    rubygem20-psych-2.0.0-1.27.amzn1.i686

noarch:  
    rubygems20-devel-2.0.14-1.27.amzn1.noarch  
    rubygems20-2.0.14-1.27.amzn1.noarch  
    ruby20-irb-2.0.0.645-1.27.amzn1.noarch  
    ruby20-doc-2.0.0.645-1.27.amzn1.noarch

src:  
    ruby20-2.0.0.645-1.27.amzn1.src

x86_64:  
    ruby20-debuginfo-2.0.0.645-1.27.amzn1.x86_64  
    rubygem20-psych-2.0.0-1.27.amzn1.x86_64  
    ruby20-libs-2.0.0.645-1.27.amzn1.x86_64  
    ruby20-devel-2.0.0.645-1.27.amzn1.x86_64  
    ruby20-2.0.0.645-1.27.amzn1.x86_64  
    rubygem20-bigdecimal-1.2.0-1.27.amzn1.x86_64  
    rubygem20-io-console-0.4.2-1.27.amzn1.x86_64