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Ubuntu Security Notice USN-1603-2

Ubuntu Security Notice USN-1603-2
Posted Oct 23, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1603-2 - USN-1603-1 fixed vulnerabilities in Ruby. This update provides the corresponding updates for Ubuntu 12.10. Shugo Maedo and Vit Ondruch 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. Various other issues were also addressed.

tags | advisory, vulnerability, ruby
systems | linux, ubuntu
advisories | CVE-2012-4466, CVE-2012-4481
MD5 | 5f19c45627a1b6c976821993dabd9854

Ubuntu Security Notice USN-1603-2

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Content-Disposition: inline

==========================================================================Ubuntu Security Notice USN-1603-2
October 23, 2012

ruby1.8 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.10

Summary:

Ruby could allow excessive access in untrusted programs.

Software Description:
- ruby1.8: Interpreter of object-oriented scripting language Ruby 1.8

Details:

USN-1603-1 fixed vulnerabilities in Ruby. This update provides the
corresponding updates for Ubuntu 12.10.

Original advisory details:

Shugo Maedo and Vit Ondruch 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-2012-4466, CVE-2012-4481)

Update instructions:

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

Ubuntu 12.10:
libruby1.8 1.8.7.358-4ubuntu0.1

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

References:
http://www.ubuntu.com/usn/usn-1603-2
http://www.ubuntu.com/usn/usn-1603-1
CVE-2012-4466, CVE-2012-4481

Package Information:
https://launchpad.net/ubuntu/+source/ruby1.8/1.8.7.358-4ubuntu0.1

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