CVE-2007-0469
The extract_files function in installer.rb in RubyGems before 0.9.1 does not check whether files exist before overwriting them, which allows user-assisted remote attackers to overwrite arbitrary files, cause a denial of service, or execute arbitrary code via crafted GEM packages.
Date published : 2007-01-23
http://www.securityfocus.com/archive/1/458128/100/0/threaded