USN-325-1: ruby1.8 vulnerability

Ubuntu Security Notice USN-325-1

27th July, 2006

ruby1.8 vulnerability

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

  • Ubuntu 6.06 LTS
  • Ubuntu 5.10
  • Ubuntu 5.04


The alias function, certain directory operations, and regular
expressions did not correctly implement safe levels. Depending on the
application these flaws might allow attackers to bypass safe level
restrictions and perform unintended operations.

Update instructions

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

Ubuntu 6.06 LTS:
ruby1.8 1.8.4-1ubuntu1.1
libruby1.8 1.8.4-1ubuntu1.1
Ubuntu 5.10:
ruby1.8 1.8.2-9ubuntu1.2
libruby1.8 1.8.2-9ubuntu1.2
Ubuntu 5.04:
ruby1.8 1.8.1+1.8.2pre4-1ubuntu0.4
libruby1.8 1.8.1+1.8.2pre4-1ubuntu0.4

To update your system, please follow these instructions:

In general, a standard system upgrade is sufficient to effect the
necessary changes.