In short
- CVE-2019-18409 is a HIGH (CVSS 7.8) vulnerability affecting ruby_parser-legacy, ruby parser-legacy (zenspider).
- Chance of exploitation in the next 30 days (EPSS): 0.33%, higher than 26.6% of all vulnerabilities.
- No patched version is listed yet: follow the vendor's advisory in References.
Description
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 description
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.
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