USN-273-1: Ruby vulnerability

24 April 2006

Ruby vulnerability



Yukihiro Matsumoto reported that Ruby's HTTP module uses blocking
sockets. By sending large amounts of data to a server application that
uses this module, a remote attacker could exploit this to render this
application unusable and not respond any more to other clients (Denial
of Service).

Update instructions

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

Ubuntu 5.10
  • libruby1.8 -
  • libwebrick-ruby1.8 -
Ubuntu 5.04
  • libruby1.8 -
  • libwebrick-ruby1.8 -
Ubuntu 4.10
  • libruby1.8 -
  • libwebrick-ruby1.8 -

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