USN-1902-1: Ruby vulnerability

Releases

• Ubuntu 13.04
• Ubuntu 12.10
• Ubuntu 12.04

Packages

• 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 machine-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

• 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

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

References

• CVE-2013-4073