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Gentoo Linux Security Advisory                           GLSA 202003-06
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Ruby: Multiple vulnerabilities
     Date: March 13, 2020
     Bugs: #696004
       ID: 202003-06

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Synopsis
=======
Multiple vulnerabilities have been found in Ruby, the worst of which
could lead to the remote execution of arbitrary code.

Background
=========
Ruby is an interpreted object-oriented programming language. The
elaborate standard library includes an HTTP server ("WEBRick") and a
class for XML parsing ("REXML").

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-lang/ruby              < 2.4.9:2.4              >= 2.4.9:2.4
                                < 2.5.7:2.5              >= 2.5.7:2.5

Description
==========
Multiple vulnerabilities have been discovered in Ruby. Please review
the CVE identifiers referenced below for details.

Impact
=====
A remote attacker could execute arbitrary code, have unauthorized
access by bypassing intended path matching or cause a Denial of Service
condition.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Ruby 2.4.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-lang/ruby-2.4.9:2.4"

All Ruby 2.5.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-lang/ruby-2.5.7:2.5"

References
=========
[ 1 ] CVE-2019-15845
      https://nvd.nist.gov/vuln/detail/CVE-2019-15845
[ 2 ] CVE-2019-16201
      https://nvd.nist.gov/vuln/detail/CVE-2019-16201
[ 3 ] CVE-2019-16254
      https://nvd.nist.gov/vuln/detail/CVE-2019-16254
[ 4 ] CVE-2019-16255
      https://nvd.nist.gov/vuln/detail/CVE-2019-16255

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202003-06

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
======
Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5/