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Category:   Application (Generic)  >   Ruby Vendors:   Matsumoto, Yukihiro
(Red Hat Issues Fix) Ruby REXML Unrestricted Entity Expansion Lets Remote Users Deny Service
SecurityTracker Alert ID:  1031265
SecurityTracker URL:  http://securitytracker.com/id/1031265
CVE Reference:   CVE-2014-8080, CVE-2014-8090   (Links to External Site)
Date:  Nov 27 2014
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.9.x prior to 1.9.3 patchlevel 551; 2.0.x prior to 2.0.0 patchlevel 598; 2.1.x prior to 2.1.5
Description:   A vulnerability was reported in Ruby. A remote user can cause denial of service conditions.

A remote user can supply a specially crafted XML document to cause the REXML parser to allocate large string objects and consume all available memory on the target system.

Willis Vandevanter reported this vulnerability.

Impact:   A remote user can cause excessive memory consumption on the target system.
Solution:   Red Hat has issued a fix.

The Red Hat advisories are available at:

https://rhn.redhat.com/errata/RHSA-2014-1911.html
https://rhn.redhat.com/errata/RHSA-2014-1912.html
https://rhn.redhat.com/errata/RHSA-2014-1913.html
https://rhn.redhat.com/errata/RHSA-2014-1914.html

Vendor URL:  www.ruby-lang.org/en/news/2014/11/13/rexml-dos-cve-2014-8090/ (Links to External Site)
Cause:   Resource error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  6, 6.4, 6.5, 6.6, 7

Message History:   This archive entry is a follow-up to the message listed below.
Nov 4 2014 Ruby REXML Unrestricted Entity Expansion Lets Remote Users Deny Service



 Source Message Contents

Subject:  [RHSA-2014:1911-01] Moderate: ruby security update

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: ruby security update
Advisory ID:       RHSA-2014:1911-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2014-1911.html
Issue date:        2014-11-26
CVE Names:         CVE-2014-8080 CVE-2014-8090 
=====================================================================

1. Summary:

Updated ruby packages that fix two security issues are now available for
Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Moderate security
impact. Common Vulnerability Scoring System (CVSS) base scores, which give
detailed severity ratings, are available for each vulnerability from the
CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

Ruby is an extensible, interpreted, object-oriented, scripting language.
It has features to process text files and to perform system management
tasks.

Multiple denial of service flaws were found in the way the Ruby REXML XML
parser performed expansion of parameter entities. A specially crafted XML
document could cause REXML to use an excessive amount of CPU and memory.
(CVE-2014-8080, CVE-2014-8090)

The CVE-2014-8090 issue was discovered by Red Hat Product Security.

All ruby users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. All running instances
of Ruby need to be restarted for this update to take effect.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1157709 - CVE-2014-8080 ruby: REXML billion laughs attack via parameter entity expansion
1159927 - CVE-2014-8090 ruby: REXML incomplete fix for CVE-2014-8080

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ruby-1.8.7.374-3.el6_6.src.rpm

i386:
ruby-1.8.7.374-3.el6_6.i686.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.i686.rpm
ruby-devel-1.8.7.374-3.el6_6.i686.rpm
ruby-irb-1.8.7.374-3.el6_6.i686.rpm
ruby-libs-1.8.7.374-3.el6_6.i686.rpm
ruby-rdoc-1.8.7.374-3.el6_6.i686.rpm

x86_64:
ruby-1.8.7.374-3.el6_6.x86_64.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.i686.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.x86_64.rpm
ruby-devel-1.8.7.374-3.el6_6.i686.rpm
ruby-devel-1.8.7.374-3.el6_6.x86_64.rpm
ruby-irb-1.8.7.374-3.el6_6.x86_64.rpm
ruby-libs-1.8.7.374-3.el6_6.i686.rpm
ruby-libs-1.8.7.374-3.el6_6.x86_64.rpm
ruby-rdoc-1.8.7.374-3.el6_6.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

i386:
ruby-debuginfo-1.8.7.374-3.el6_6.i686.rpm
ruby-docs-1.8.7.374-3.el6_6.i686.rpm
ruby-ri-1.8.7.374-3.el6_6.i686.rpm
ruby-static-1.8.7.374-3.el6_6.i686.rpm
ruby-tcltk-1.8.7.374-3.el6_6.i686.rpm

x86_64:
ruby-debuginfo-1.8.7.374-3.el6_6.x86_64.rpm
ruby-docs-1.8.7.374-3.el6_6.x86_64.rpm
ruby-ri-1.8.7.374-3.el6_6.x86_64.rpm
ruby-static-1.8.7.374-3.el6_6.x86_64.rpm
ruby-tcltk-1.8.7.374-3.el6_6.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ruby-1.8.7.374-3.el6_6.src.rpm

x86_64:
ruby-1.8.7.374-3.el6_6.x86_64.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.i686.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.x86_64.rpm
ruby-devel-1.8.7.374-3.el6_6.i686.rpm
ruby-devel-1.8.7.374-3.el6_6.x86_64.rpm
ruby-irb-1.8.7.374-3.el6_6.x86_64.rpm
ruby-libs-1.8.7.374-3.el6_6.i686.rpm
ruby-libs-1.8.7.374-3.el6_6.x86_64.rpm
ruby-rdoc-1.8.7.374-3.el6_6.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

x86_64:
ruby-debuginfo-1.8.7.374-3.el6_6.x86_64.rpm
ruby-docs-1.8.7.374-3.el6_6.x86_64.rpm
ruby-ri-1.8.7.374-3.el6_6.x86_64.rpm
ruby-static-1.8.7.374-3.el6_6.x86_64.rpm
ruby-tcltk-1.8.7.374-3.el6_6.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ruby-1.8.7.374-3.el6_6.src.rpm

i386:
ruby-1.8.7.374-3.el6_6.i686.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.i686.rpm
ruby-devel-1.8.7.374-3.el6_6.i686.rpm
ruby-irb-1.8.7.374-3.el6_6.i686.rpm
ruby-libs-1.8.7.374-3.el6_6.i686.rpm
ruby-rdoc-1.8.7.374-3.el6_6.i686.rpm

ppc64:
ruby-1.8.7.374-3.el6_6.ppc64.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.ppc.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.ppc64.rpm
ruby-devel-1.8.7.374-3.el6_6.ppc.rpm
ruby-devel-1.8.7.374-3.el6_6.ppc64.rpm
ruby-irb-1.8.7.374-3.el6_6.ppc64.rpm
ruby-libs-1.8.7.374-3.el6_6.ppc.rpm
ruby-libs-1.8.7.374-3.el6_6.ppc64.rpm
ruby-rdoc-1.8.7.374-3.el6_6.ppc64.rpm

s390x:
ruby-1.8.7.374-3.el6_6.s390x.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.s390.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.s390x.rpm
ruby-devel-1.8.7.374-3.el6_6.s390.rpm
ruby-devel-1.8.7.374-3.el6_6.s390x.rpm
ruby-irb-1.8.7.374-3.el6_6.s390x.rpm
ruby-libs-1.8.7.374-3.el6_6.s390.rpm
ruby-libs-1.8.7.374-3.el6_6.s390x.rpm
ruby-rdoc-1.8.7.374-3.el6_6.s390x.rpm

x86_64:
ruby-1.8.7.374-3.el6_6.x86_64.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.i686.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.x86_64.rpm
ruby-devel-1.8.7.374-3.el6_6.i686.rpm
ruby-devel-1.8.7.374-3.el6_6.x86_64.rpm
ruby-irb-1.8.7.374-3.el6_6.x86_64.rpm
ruby-libs-1.8.7.374-3.el6_6.i686.rpm
ruby-libs-1.8.7.374-3.el6_6.x86_64.rpm
ruby-rdoc-1.8.7.374-3.el6_6.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

i386:
ruby-debuginfo-1.8.7.374-3.el6_6.i686.rpm
ruby-docs-1.8.7.374-3.el6_6.i686.rpm
ruby-ri-1.8.7.374-3.el6_6.i686.rpm
ruby-static-1.8.7.374-3.el6_6.i686.rpm
ruby-tcltk-1.8.7.374-3.el6_6.i686.rpm

ppc64:
ruby-debuginfo-1.8.7.374-3.el6_6.ppc64.rpm
ruby-docs-1.8.7.374-3.el6_6.ppc64.rpm
ruby-ri-1.8.7.374-3.el6_6.ppc64.rpm
ruby-static-1.8.7.374-3.el6_6.ppc64.rpm
ruby-tcltk-1.8.7.374-3.el6_6.ppc64.rpm

s390x:
ruby-debuginfo-1.8.7.374-3.el6_6.s390x.rpm
ruby-docs-1.8.7.374-3.el6_6.s390x.rpm
ruby-ri-1.8.7.374-3.el6_6.s390x.rpm
ruby-static-1.8.7.374-3.el6_6.s390x.rpm
ruby-tcltk-1.8.7.374-3.el6_6.s390x.rpm

x86_64:
ruby-debuginfo-1.8.7.374-3.el6_6.x86_64.rpm
ruby-docs-1.8.7.374-3.el6_6.x86_64.rpm
ruby-ri-1.8.7.374-3.el6_6.x86_64.rpm
ruby-static-1.8.7.374-3.el6_6.x86_64.rpm
ruby-tcltk-1.8.7.374-3.el6_6.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ruby-1.8.7.374-3.el6_6.src.rpm

i386:
ruby-1.8.7.374-3.el6_6.i686.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.i686.rpm
ruby-devel-1.8.7.374-3.el6_6.i686.rpm
ruby-irb-1.8.7.374-3.el6_6.i686.rpm
ruby-libs-1.8.7.374-3.el6_6.i686.rpm
ruby-rdoc-1.8.7.374-3.el6_6.i686.rpm

x86_64:
ruby-1.8.7.374-3.el6_6.x86_64.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.i686.rpm
ruby-debuginfo-1.8.7.374-3.el6_6.x86_64.rpm
ruby-devel-1.8.7.374-3.el6_6.i686.rpm
ruby-devel-1.8.7.374-3.el6_6.x86_64.rpm
ruby-irb-1.8.7.374-3.el6_6.x86_64.rpm
ruby-libs-1.8.7.374-3.el6_6.i686.rpm
ruby-libs-1.8.7.374-3.el6_6.x86_64.rpm
ruby-rdoc-1.8.7.374-3.el6_6.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

i386:
ruby-debuginfo-1.8.7.374-3.el6_6.i686.rpm
ruby-docs-1.8.7.374-3.el6_6.i686.rpm
ruby-ri-1.8.7.374-3.el6_6.i686.rpm
ruby-static-1.8.7.374-3.el6_6.i686.rpm
ruby-tcltk-1.8.7.374-3.el6_6.i686.rpm

x86_64:
ruby-debuginfo-1.8.7.374-3.el6_6.x86_64.rpm
ruby-docs-1.8.7.374-3.el6_6.x86_64.rpm
ruby-ri-1.8.7.374-3.el6_6.x86_64.rpm
ruby-static-1.8.7.374-3.el6_6.x86_64.rpm
ruby-tcltk-1.8.7.374-3.el6_6.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2014-8080
https://access.redhat.com/security/cve/CVE-2014-8090
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2014 Red Hat, Inc.
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