Ruby is an interpreted scripting language for object-oriented programming.
Andres Salomon reported an insecure file permissions flaw in the CGI session management of Ruby. FileStore created world readable files that could allow a malicious local user the ability to read CGI session data. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0755 to this issue.
Users are advised to upgrade to this erratum package, which contains a backported patch to CGI::Session FileStore.