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CVE-2019-18409

Date: October 24, 2019

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.

Language: Ruby

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2019-18409
https://github.com/zenspider/ruby_parser-legacy/issues/1
https://github.com/zenspider/ruby_parser-legacy
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/brakeman/CVE-2019-18409.yml
https://brakemanscanner.org/blog/2019/10/14/brakeman-4-dot-7-dot-1-released
https://www.mend.io/vulnerability-database/CVE-2019-18409

Severity Score

Weakness Type (CWE)

Incorrect Permission Assignment for Critical Resource

CWE-732

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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