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Category:   Application (Generic)  >   Ruby Vendors:   Matsumoto, Yukihiro
(Red Hat Issues Fix) Ruby BigDecimal Conversion Bug May Let Remote Users Deny Service
SecurityTracker Alert ID:  1022507
SecurityTracker URL:  http://securitytracker.com/id/1022507
CVE Reference:   CVE-2009-1904   (Links to External Site)
Date:  Jul 3 2009
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.8.6-p368, 1.8.7-p160; and prior versions
Description:   A vulnerability was reported in Ruby. A remote user can cause denial of service conditions.

A remote user can supply a specially crafted value to a function that converts BigDecimal objects into Float numbers to trigger a segmentation fault.

Impact:   A remote user can cause the target application to crash.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2009-1140.html

Vendor URL:  www.ruby-lang.org/en/news/2009/06/09/dos-vulnerability-in-bigdecimal/ (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  4, 5

Message History:   This archive entry is a follow-up to the message listed below.
Jun 11 2009 Ruby BigDecimal Conversion Bug May Let Remote Users Deny Service



 Source Message Contents

Subject:  [RHSA-2009:1140-02] Moderate: ruby security update


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

Synopsis:          Moderate: ruby security update
Advisory ID:       RHSA-2009:1140-02
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2009-1140.html
Issue date:        2009-07-02
CVE Names:         CVE-2007-1558 CVE-2009-0642 CVE-2009-1904 
=====================================================================

1. Summary:

Updated ruby packages that fix multiple security issues are now available
for Red Hat Enterprise Linux 4 and 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

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

A flaw was found in the way the Ruby POP module processed certain APOP
authentication requests. By sending certain responses when the Ruby APOP
module attempted to authenticate using APOP against a POP server, a remote
attacker could, potentially, acquire certain portions of a user's
authentication credentials. (CVE-2007-1558)

It was discovered that Ruby did not properly check the return value when
verifying X.509 certificates. This could, potentially, allow a remote
attacker to present an invalid X.509 certificate, and have Ruby treat it as
valid. (CVE-2009-0642)

A flaw was found in the way Ruby converted BigDecimal objects to Float
numbers. If an attacker were able to provide certain input for the
BigDecimal object converter, they could crash an application using this
class. (CVE-2009-1904)

All Ruby users should upgrade to these updated packages, which contain
backported patches to resolve these issues.

4. Solution:

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

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

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

241191 - CVE-2007-1558 fetchmail/mutt/evolution/...: APOP password disclosure vulnerability
486183 - CVE-2009-0642 ruby: Incorrect checks for validity of X.509 certificates
504958 - CVE-2009-1904 ruby: DoS vulnerability in BigDecimal

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/ruby-1.8.1-7.el4_8.3.src.rpm

i386:
irb-1.8.1-7.el4_8.3.i386.rpm
ruby-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-devel-1.8.1-7.el4_8.3.i386.rpm
ruby-docs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-mode-1.8.1-7.el4_8.3.i386.rpm
ruby-tcltk-1.8.1-7.el4_8.3.i386.rpm

ia64:
irb-1.8.1-7.el4_8.3.ia64.rpm
ruby-1.8.1-7.el4_8.3.ia64.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.ia64.rpm
ruby-devel-1.8.1-7.el4_8.3.ia64.rpm
ruby-docs-1.8.1-7.el4_8.3.ia64.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.ia64.rpm
ruby-mode-1.8.1-7.el4_8.3.ia64.rpm
ruby-tcltk-1.8.1-7.el4_8.3.ia64.rpm

ppc:
irb-1.8.1-7.el4_8.3.ppc.rpm
ruby-1.8.1-7.el4_8.3.ppc.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.ppc.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.ppc64.rpm
ruby-devel-1.8.1-7.el4_8.3.ppc.rpm
ruby-docs-1.8.1-7.el4_8.3.ppc.rpm
ruby-libs-1.8.1-7.el4_8.3.ppc.rpm
ruby-libs-1.8.1-7.el4_8.3.ppc64.rpm
ruby-mode-1.8.1-7.el4_8.3.ppc.rpm
ruby-tcltk-1.8.1-7.el4_8.3.ppc.rpm

s390:
irb-1.8.1-7.el4_8.3.s390.rpm
ruby-1.8.1-7.el4_8.3.s390.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.s390.rpm
ruby-devel-1.8.1-7.el4_8.3.s390.rpm
ruby-docs-1.8.1-7.el4_8.3.s390.rpm
ruby-libs-1.8.1-7.el4_8.3.s390.rpm
ruby-mode-1.8.1-7.el4_8.3.s390.rpm
ruby-tcltk-1.8.1-7.el4_8.3.s390.rpm

s390x:
irb-1.8.1-7.el4_8.3.s390x.rpm
ruby-1.8.1-7.el4_8.3.s390x.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.s390.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.s390x.rpm
ruby-devel-1.8.1-7.el4_8.3.s390x.rpm
ruby-docs-1.8.1-7.el4_8.3.s390x.rpm
ruby-libs-1.8.1-7.el4_8.3.s390.rpm
ruby-libs-1.8.1-7.el4_8.3.s390x.rpm
ruby-mode-1.8.1-7.el4_8.3.s390x.rpm
ruby-tcltk-1.8.1-7.el4_8.3.s390x.rpm

x86_64:
irb-1.8.1-7.el4_8.3.x86_64.rpm
ruby-1.8.1-7.el4_8.3.x86_64.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.x86_64.rpm
ruby-devel-1.8.1-7.el4_8.3.x86_64.rpm
ruby-docs-1.8.1-7.el4_8.3.x86_64.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.x86_64.rpm
ruby-mode-1.8.1-7.el4_8.3.x86_64.rpm
ruby-tcltk-1.8.1-7.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/ruby-1.8.1-7.el4_8.3.src.rpm

i386:
irb-1.8.1-7.el4_8.3.i386.rpm
ruby-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-devel-1.8.1-7.el4_8.3.i386.rpm
ruby-docs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-mode-1.8.1-7.el4_8.3.i386.rpm
ruby-tcltk-1.8.1-7.el4_8.3.i386.rpm

x86_64:
irb-1.8.1-7.el4_8.3.x86_64.rpm
ruby-1.8.1-7.el4_8.3.x86_64.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.x86_64.rpm
ruby-devel-1.8.1-7.el4_8.3.x86_64.rpm
ruby-docs-1.8.1-7.el4_8.3.x86_64.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.x86_64.rpm
ruby-mode-1.8.1-7.el4_8.3.x86_64.rpm
ruby-tcltk-1.8.1-7.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/ruby-1.8.1-7.el4_8.3.src.rpm

i386:
irb-1.8.1-7.el4_8.3.i386.rpm
ruby-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-devel-1.8.1-7.el4_8.3.i386.rpm
ruby-docs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-mode-1.8.1-7.el4_8.3.i386.rpm
ruby-tcltk-1.8.1-7.el4_8.3.i386.rpm

ia64:
irb-1.8.1-7.el4_8.3.ia64.rpm
ruby-1.8.1-7.el4_8.3.ia64.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.ia64.rpm
ruby-devel-1.8.1-7.el4_8.3.ia64.rpm
ruby-docs-1.8.1-7.el4_8.3.ia64.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.ia64.rpm
ruby-mode-1.8.1-7.el4_8.3.ia64.rpm
ruby-tcltk-1.8.1-7.el4_8.3.ia64.rpm

x86_64:
irb-1.8.1-7.el4_8.3.x86_64.rpm
ruby-1.8.1-7.el4_8.3.x86_64.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.x86_64.rpm
ruby-devel-1.8.1-7.el4_8.3.x86_64.rpm
ruby-docs-1.8.1-7.el4_8.3.x86_64.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.x86_64.rpm
ruby-mode-1.8.1-7.el4_8.3.x86_64.rpm
ruby-tcltk-1.8.1-7.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/ruby-1.8.1-7.el4_8.3.src.rpm

i386:
irb-1.8.1-7.el4_8.3.i386.rpm
ruby-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-devel-1.8.1-7.el4_8.3.i386.rpm
ruby-docs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-mode-1.8.1-7.el4_8.3.i386.rpm
ruby-tcltk-1.8.1-7.el4_8.3.i386.rpm

ia64:
irb-1.8.1-7.el4_8.3.ia64.rpm
ruby-1.8.1-7.el4_8.3.ia64.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.ia64.rpm
ruby-devel-1.8.1-7.el4_8.3.ia64.rpm
ruby-docs-1.8.1-7.el4_8.3.ia64.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.ia64.rpm
ruby-mode-1.8.1-7.el4_8.3.ia64.rpm
ruby-tcltk-1.8.1-7.el4_8.3.ia64.rpm

x86_64:
irb-1.8.1-7.el4_8.3.x86_64.rpm
ruby-1.8.1-7.el4_8.3.x86_64.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.i386.rpm
ruby-debuginfo-1.8.1-7.el4_8.3.x86_64.rpm
ruby-devel-1.8.1-7.el4_8.3.x86_64.rpm
ruby-docs-1.8.1-7.el4_8.3.x86_64.rpm
ruby-libs-1.8.1-7.el4_8.3.i386.rpm
ruby-libs-1.8.1-7.el4_8.3.x86_64.rpm
ruby-mode-1.8.1-7.el4_8.3.x86_64.rpm
ruby-tcltk-1.8.1-7.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/ruby-1.8.5-5.el5_3.7.src.rpm

i386:
ruby-1.8.5-5.el5_3.7.i386.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.i386.rpm
ruby-docs-1.8.5-5.el5_3.7.i386.rpm
ruby-irb-1.8.5-5.el5_3.7.i386.rpm
ruby-libs-1.8.5-5.el5_3.7.i386.rpm
ruby-rdoc-1.8.5-5.el5_3.7.i386.rpm
ruby-ri-1.8.5-5.el5_3.7.i386.rpm
ruby-tcltk-1.8.5-5.el5_3.7.i386.rpm

x86_64:
ruby-1.8.5-5.el5_3.7.x86_64.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.i386.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.x86_64.rpm
ruby-docs-1.8.5-5.el5_3.7.x86_64.rpm
ruby-irb-1.8.5-5.el5_3.7.x86_64.rpm
ruby-libs-1.8.5-5.el5_3.7.i386.rpm
ruby-libs-1.8.5-5.el5_3.7.x86_64.rpm
ruby-rdoc-1.8.5-5.el5_3.7.x86_64.rpm
ruby-ri-1.8.5-5.el5_3.7.x86_64.rpm
ruby-tcltk-1.8.5-5.el5_3.7.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/ruby-1.8.5-5.el5_3.7.src.rpm

i386:
ruby-debuginfo-1.8.5-5.el5_3.7.i386.rpm
ruby-devel-1.8.5-5.el5_3.7.i386.rpm
ruby-mode-1.8.5-5.el5_3.7.i386.rpm

x86_64:
ruby-debuginfo-1.8.5-5.el5_3.7.i386.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.x86_64.rpm
ruby-devel-1.8.5-5.el5_3.7.i386.rpm
ruby-devel-1.8.5-5.el5_3.7.x86_64.rpm
ruby-mode-1.8.5-5.el5_3.7.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/ruby-1.8.5-5.el5_3.7.src.rpm

i386:
ruby-1.8.5-5.el5_3.7.i386.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.i386.rpm
ruby-devel-1.8.5-5.el5_3.7.i386.rpm
ruby-docs-1.8.5-5.el5_3.7.i386.rpm
ruby-irb-1.8.5-5.el5_3.7.i386.rpm
ruby-libs-1.8.5-5.el5_3.7.i386.rpm
ruby-mode-1.8.5-5.el5_3.7.i386.rpm
ruby-rdoc-1.8.5-5.el5_3.7.i386.rpm
ruby-ri-1.8.5-5.el5_3.7.i386.rpm
ruby-tcltk-1.8.5-5.el5_3.7.i386.rpm

ia64:
ruby-1.8.5-5.el5_3.7.ia64.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.ia64.rpm
ruby-devel-1.8.5-5.el5_3.7.ia64.rpm
ruby-docs-1.8.5-5.el5_3.7.ia64.rpm
ruby-irb-1.8.5-5.el5_3.7.ia64.rpm
ruby-libs-1.8.5-5.el5_3.7.ia64.rpm
ruby-mode-1.8.5-5.el5_3.7.ia64.rpm
ruby-rdoc-1.8.5-5.el5_3.7.ia64.rpm
ruby-ri-1.8.5-5.el5_3.7.ia64.rpm
ruby-tcltk-1.8.5-5.el5_3.7.ia64.rpm

ppc:
ruby-1.8.5-5.el5_3.7.ppc.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.ppc.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.ppc64.rpm
ruby-devel-1.8.5-5.el5_3.7.ppc.rpm
ruby-devel-1.8.5-5.el5_3.7.ppc64.rpm
ruby-docs-1.8.5-5.el5_3.7.ppc.rpm
ruby-irb-1.8.5-5.el5_3.7.ppc.rpm
ruby-libs-1.8.5-5.el5_3.7.ppc.rpm
ruby-libs-1.8.5-5.el5_3.7.ppc64.rpm
ruby-mode-1.8.5-5.el5_3.7.ppc.rpm
ruby-rdoc-1.8.5-5.el5_3.7.ppc.rpm
ruby-ri-1.8.5-5.el5_3.7.ppc.rpm
ruby-tcltk-1.8.5-5.el5_3.7.ppc.rpm

s390x:
ruby-1.8.5-5.el5_3.7.s390x.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.s390.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.s390x.rpm
ruby-devel-1.8.5-5.el5_3.7.s390.rpm
ruby-devel-1.8.5-5.el5_3.7.s390x.rpm
ruby-docs-1.8.5-5.el5_3.7.s390x.rpm
ruby-irb-1.8.5-5.el5_3.7.s390x.rpm
ruby-libs-1.8.5-5.el5_3.7.s390.rpm
ruby-libs-1.8.5-5.el5_3.7.s390x.rpm
ruby-mode-1.8.5-5.el5_3.7.s390x.rpm
ruby-rdoc-1.8.5-5.el5_3.7.s390x.rpm
ruby-ri-1.8.5-5.el5_3.7.s390x.rpm
ruby-tcltk-1.8.5-5.el5_3.7.s390x.rpm

x86_64:
ruby-1.8.5-5.el5_3.7.x86_64.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.i386.rpm
ruby-debuginfo-1.8.5-5.el5_3.7.x86_64.rpm
ruby-devel-1.8.5-5.el5_3.7.i386.rpm
ruby-devel-1.8.5-5.el5_3.7.x86_64.rpm
ruby-docs-1.8.5-5.el5_3.7.x86_64.rpm
ruby-irb-1.8.5-5.el5_3.7.x86_64.rpm
ruby-libs-1.8.5-5.el5_3.7.i386.rpm
ruby-libs-1.8.5-5.el5_3.7.x86_64.rpm
ruby-mode-1.8.5-5.el5_3.7.x86_64.rpm
ruby-rdoc-1.8.5-5.el5_3.7.x86_64.rpm
ruby-ri-1.8.5-5.el5_3.7.x86_64.rpm
ruby-tcltk-1.8.5-5.el5_3.7.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://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1558
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0642
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1904
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2009 Red Hat, Inc.
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