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.
{ "nvd_published_at": "2019-10-24T14:15:00Z", "cwe_ids": [ "CWE-732" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2019-10-25T16:26:28Z" }