Exploit the possiblities

Ubuntu Security Notice USN-2035-1

Ubuntu Security Notice USN-2035-1
Posted Nov 27, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2035-1 - Charlie Somerville discovered that Ruby incorrectly handled floating point number conversion. An attacker could possibly use this issue with an application that converts text to floating point numbers to cause the application to crash, resulting in a denial of service, or possibly execute arbitrary code. Vit Ondruch discovered that Ruby did not perform taint checking for certain functions. An attacker could possibly use this issue to bypass certain intended restrictions. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, ruby
systems | linux, ubuntu
advisories | CVE-2013-4164, CVE-2013-2065, CVE-2013-2065, CVE-2013-4164
MD5 | a993e5bd40e2e44c864bb09b2e97bc80

Ubuntu Security Notice USN-2035-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-2035-1
November 27, 2013

ruby1.8, ruby1.9.1 vulnerabilities
==========================================================================

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

- Ubuntu 13.10
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in Ruby.

Software Description:
- ruby1.8: Object-oriented scripting language
- ruby1.9.1: Object-oriented scripting language

Details:

Charlie Somerville discovered that Ruby incorrectly handled floating point
number conversion. An attacker could possibly use this issue with an
application that converts text to floating point numbers to cause the
application to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2013-4164)

Vit Ondruch discovered that Ruby did not perform taint checking for certain
functions. An attacker could possibly use this issue to bypass certain
intended restrictions. (CVE-2013-2065)

Update instructions:

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

Ubuntu 13.10:
libruby1.8 1.8.7.358-7ubuntu2.1
libruby1.9.1 1.9.3.194-8.1ubuntu2.1
ruby1.8 1.8.7.358-7ubuntu2.1
ruby1.9.1 1.9.3.194-8.1ubuntu2.1

Ubuntu 13.04:
libruby1.8 1.8.7.358-7ubuntu1.2
libruby1.9.1 1.9.3.194-8.1ubuntu1.2
ruby1.8 1.8.7.358-7ubuntu1.2
ruby1.9.1 1.9.3.194-8.1ubuntu1.2

Ubuntu 12.10:
libruby1.8 1.8.7.358-4ubuntu0.4
libruby1.9.1 1.9.3.194-1ubuntu1.6
ruby1.8 1.8.7.358-4ubuntu0.4
ruby1.9.1 1.9.3.194-1ubuntu1.6

Ubuntu 12.04 LTS:
libruby1.8 1.8.7.352-2ubuntu1.4
libruby1.9.1 1.9.3.0-1ubuntu2.8
ruby1.8 1.8.7.352-2ubuntu1.4
ruby1.9.1 1.9.3.0-1ubuntu2.8

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

References:
http://www.ubuntu.com/usn/usn-2035-1
CVE-2013-2065, CVE-2013-4164

Package Information:
https://launchpad.net/ubuntu/+source/ruby1.8/1.8.7.358-7ubuntu2.1
https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.194-8.1ubuntu2.1
https://launchpad.net/ubuntu/+source/ruby1.8/1.8.7.358-7ubuntu1.2
https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.194-8.1ubuntu1.2
https://launchpad.net/ubuntu/+source/ruby1.8/1.8.7.358-4ubuntu0.4
https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.194-1ubuntu1.6
https://launchpad.net/ubuntu/+source/ruby1.8/1.8.7.352-2ubuntu1.4
https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.0-1ubuntu2.8


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