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USN-1614-1: Ruby vulnerabilities

23 October 2012

Several security issues were fixed in Ruby.



  • ruby1.9.1 - Interpreter of object-oriented scripting language Ruby


Tyler Hicks and Shugo Maeda discovered that Ruby incorrectly allowed untainted
strings to be modified in protective safe levels. An attacker could use this
flaw to bypass intended access restrictions. USN-1602-1 fixed these
vulnerabilities in other Ubuntu releases. This update provides the
corresponding updates for Ubuntu 12.10. (CVE-2012-4464, CVE-2012-4466)

Peter Bex discovered that Ruby incorrectly handled file path strings when
opening files. An attacker could use this flaw to open or create unexpected
files. (CVE-2012-4522)

Update instructions

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

Ubuntu 12.10
Ubuntu 12.04

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

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