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Ubuntu: Security update for Ruby

Tyler Hicks and Shugo Maeda discovered that Ruby incorrectly allowed untainted strings to be modified in protective safe levels. An attacker could use this flaw to bypass intended access restrictions. Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1602-1
October 10, 2012

ruby1.9.1 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 LTS

Summary:

Ruby could allow excessive access in untrusted programs.

Software Description:
- ruby1.9.1: Interpreter of object-oriented scripting language Ruby

Details:

Tyler Hicks and Shugo Maeda discovered that Ruby incorrectly allowed untainted
strings to be modified in protective safe levels. An attacker could use this
flaw to bypass intended access restrictions. (CVE-2012-4464, CVE-2012-4466)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 LTS:
 libruby1.9.1                    1.9.3.0-1ubuntu2.3

In general, a standard system update will make all the necessary changes.

References:
 http://www.ubuntu.com/usn/usn-1602-1
 CVE-2012-4464, CVE-2012-4466

Package Information:
 https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.0-1ubuntu2.3
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