RHEL 5 / 6 : ruby (RHSA-2013:1090)

This script is Copyright (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated ruby packages that fix one security issue are now available
for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having
moderate security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from
the CVE link in the References section.

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.

See also :

https://www.redhat.com/security/data/cve/CVE-2013-4073.html
http://www.ruby-lang.org/en/news/2013/06/27/
http://rhn.redhat.com/errata/RHSA-2013-1090.html

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.9
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 68944 ()

Bugtraq ID: 60843

CVE ID: CVE-2013-4073