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Red Hat Enterprise Linux 5 & 6: RHSA-2013:1090-01 Moderate: Ruby SSL Threat

red hat
Calendar Grey July 17, 2013
Scroller Redhat Esm H88
Revised Python libraries for CentOS address a noteworthy severity TLS vulnerability linked to domain validations. Upgrade recommended.
Updated ruby packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6

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

Summary

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 Ruby's SSL client's hostname identity check when handling certificates that contain hostnames with NULL bytes. An attacker could potentially exploit this flaw to conduct man-in-the-middle attacks to spoof SSL servers. Note that to exploit this issue, an attacker would need to obtain a carefully-crafted certificate signed by an authority that the client trusts. (CVE-2013-4073)
All users of Ruby are advised to upgrade to these updated packages, which contain backported patches to resolve this issue.

Topics%20covered

Topics Covered

security advisory moderate Red Hat update ruby SSL hostname check

References

https://access.redhat.com/security/cve/CVE-2013-4073 https://access.redhat.com/security/updates/classification/#moderate https://www.ruby-lang.org/en/news/2013/06/27/hostname-check-bypassing-vulnerability-in-openssl-client-cve-2013-4073/

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: ruby-1.8.5-31.el5_9.i386.rpm ruby-debuginfo-1.8.5-31.el5_9.i386.rpm ruby-docs-1.8.5-31.el5_9.i386.rpm ruby-irb-1.8.5-31.el5_9.i386.rpm ruby-libs-1.8.5-31.el5_9.i386.rpm ruby-rdoc-1.8.5-31.el5_9.i386.rpm ruby-ri-1.8.5-31.el5_9.i386.rpm ruby-tcltk-1.8.5-31.el5_9.i386.rpm
x86_64: ruby-1.8.5-31.el5_9.x86_64.rpm ruby-debuginfo-1.8.5-31.el5_9.i386.rpm ruby-debuginfo-1.8.5-31.el5_9.x86_64.rpm ruby-docs-1.8.5-31.el5_9.x86_64.rpm ruby-irb-1.8.5-31.el5_9.x86_64.rpm ruby-libs-1.8.5-31.el5_9.i386.rpm ruby-libs-1.8.5-31.el5_9.x86_64.rpm ruby-rdoc-1.8.5-31.el5_9.x86_64.rpm ruby-ri-1.8.5-31.el5_9.x86_64.rpm ruby-tcltk-1.8.5-31.el5_9.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386: ruby-debuginfo-1.8.5-31.el5_9.i386.rpm ruby-devel-1.8.5-31.el5_9.i386.rpm ruby-mode-1.8.5-31.el5_9.i386.rpm
x86_64: ruby-debuginfo-1.8.5-31.el5_9.i386.rpm ruby-debuginfo-1.8.5-31.el5_9.x86_64.rpm ruby-devel-1.8.5-31.el5_9.i386.rpm ruby-devel-1.8.5-31.el5_9.x86_64.rpm ruby-mode-1.8.5-31.el5_9.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: ruby-1.8.5-31.el5_9.i386.rpm ruby-debuginfo-1.8.5-31.el5_9.i386.rpm ruby-devel-1.8.5-31.el5_9.i386.rpm ruby-docs-1.8.5-31.el5_9.i386.rpm ruby-irb-1.8.5-31.el5_9.i386.rpm

Read the Full Advisory


Advisory ID: RHSA-2013:1090-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:1090.html
Issue date: 2013-07-17

Topic

Updated ruby packages that fix one security issue are now available forRed Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat update ruby SSL hostname check

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

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

Bugs Fixed

979251 - CVE-2013-4073 ruby: hostname check bypassing vulnerability in SSL client

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