==========================================================================
Ubuntu Security Notice USN-2397-1
November 04, 2014
ruby1.8, ruby1.9.1, ruby2.0, ruby2.1 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 14.10
– Ubuntu 14.04 LTS
– Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in Ruby.
Software Description:
– ruby2.0: Object-oriented scripting language
– ruby2.1: Object-oriented scripting language
– ruby1.9.1: Object-oriented scripting language
– ruby1.8: Object-oriented scripting language
Details:
Will Wood discovered that Ruby incorrectly handled the encodes() function.
An attacker could possibly use this issue to cause Ruby to crash, resulting
in a denial of service, or possibly execute arbitrary code. The default
compiler options for affected releases should reduce the vulnerability to a
denial of service. (CVE-2014-4975)
Willis Vandevanter discovered that Ruby incorrectly handled XML entity
expansion. An attacker could use this flaw to cause Ruby to consume large
amounts of resources, resulting in a denial of service. (CVE-2014-8080)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.10:
libruby2.0 2.0.0.484+really457-3ubuntu1.1
libruby2.1 2.1.2-2ubuntu1.1
ruby2.0 2.0.0.484+really457-3ubuntu1.1
ruby2.1 2.1.2-2ubuntu1.1
Ubuntu 14.04 LTS:
libruby1.9.1 1.9.3.484-2ubuntu1.1
libruby2.0 2.0.0.484-1ubuntu2.1
ruby1.9.1 1.9.3.484-2ubuntu1.1
ruby2.0 2.0.0.484-1ubuntu2.1
Ubuntu 12.04 LTS:
libruby1.8 1.8.7.352-2ubuntu1.5
libruby1.9.1 1.9.3.0-1ubuntu2.9
ruby1.8 1.8.7.352-2ubuntu1.5
ruby1.9.1 1.9.3.0-1ubuntu2.9
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2397-1
CVE-2014-4975, CVE-2014-8080
Package Information:
https://launchpad.net/ubuntu/+source/ruby2.0/2.0.0.484+really457-3ubuntu1.1
https://launchpad.net/ubuntu/+source/ruby2.1/2.1.2-2ubuntu1.1
https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.484-2ubuntu1.1
https://launchpad.net/ubuntu/+source/ruby2.0/2.0.0.484-1ubuntu2.1
https://launchpad.net/ubuntu/+source/ruby1.8/1.8.7.352-2ubuntu1.5
https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.0-1ubuntu2.9
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