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USN-1780-1: Ruby vulnerability

25 March 2013

Ruby could be made to hang if it received specially crafted input.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Releases

Packages

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

Details

Ben Murphy discovered that the Ruby REXML library incorrectly handled XML
entity expansion. An attacker could use this flaw to cause Ruby to consume
large amounts of memory, resulting in a denial of service.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 12.10
Ubuntu 12.04
Ubuntu 11.10
Ubuntu 10.04

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

References