ruby1.8, ruby1.9.1 vulnerability

9 July 2013

ruby1.8, ruby1.9.1 vulnerability

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

• Ubuntu 13.04
• Ubuntu 12.10
• Ubuntu 12.04 LTS

Summary

An attacker could trick Ruby into trusting a rogue server.

Software Description

• ruby1.8 - Object-oriented scripting language
• ruby1.9.1 - Object-oriented scripting language

Details

William (B.J.) Snow Orvis discovered that Ruby incorrectly verified the hostname in SSL certificates. An attacker could trick Ruby into trusting a rogue server certificate, which was signed by a trusted certificate authority, to perform a man-in-the-middle attack.

Update instructions

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

Ubuntu 13.04

libruby1.8 - 1.8.7.358-7ubuntu1.1

libruby1.9.1 - 1.9.3.194-8.1ubuntu1.1

ruby1.8 - 1.8.7.358-7ubuntu1.1

ruby1.9.1 - 1.9.3.194-8.1ubuntu1.1

Ubuntu 12.10

libruby1.8 - 1.8.7.358-4ubuntu0.3

libruby1.9.1 - 1.9.3.194-1ubuntu1.5

ruby1.8 - 1.8.7.358-4ubuntu0.3

ruby1.9.1 - 1.9.3.194-1ubuntu1.5

Ubuntu 12.04 LTS

libruby1.8 - 1.8.7.352-2ubuntu1.3

libruby1.9.1 - 1.9.3.0-1ubuntu2.7

ruby1.8 - 1.8.7.352-2ubuntu1.3

ruby1.9.1 - 1.9.3.0-1ubuntu2.7

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2013-4073