The ruby_parser-legacy (aka legacy) gem 1.0.0 for Ruby allows local privilege escalation because of world-writable files. For example, if the brakeman gem (which has a legacy dependency) 4.5.0 through 4.7.0 is used, a local user can insert malicious code into the ruby_parser-legacy-1.0.0/lib/ruby_parser/legacy/ruby_parser.rb file.
{
"cpe": "cpe:2.3:a:zenspider:ruby_parser-legacy:1.0.0:*:*:*:*:ruby:*:*",
"extracted_events": [
{
"introduced": "1.0.0"
},
{
"last_affected": "1.0.0"
}
],
"source": "CPE_STRING"
}