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=========================================================== Ubuntu Security Notice USN-371-1 October 31, 2006 ruby1.8 vulnerability CVE-2006-5467 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.04 Ubuntu 5.10 Ubuntu 6.06 LTS Ubuntu 6.10 This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 5.04: libruby1.8 1.8.1+1.8.2pre4-1ubuntu0.5 Ubuntu 5.10: libruby1.8 1.8.2-9ubuntu1.3 Ubuntu 6.06 LTS: libruby1.8 1.8.4-1ubuntu1.2 Ubuntu 6.10: libruby1.8 1.8.4-5ubuntu1.1 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: An error was found in Ruby's CGI library that did not correctly check for the end of multipart MIME requests. Using a crafted HTTP request, a remote user could cause a denial of service, where Ruby CGI applications would end up in a loop, monopolizing a CPU.