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Ruby_parser-legacy Incorrect Permission Assignment for Critical Resource

High severity GitHub Reviewed Published Oct 25, 2019 to the GitHub Advisory Database • Updated Aug 25, 2023

Package

bundler ruby_parser-legacy (RubyGems)

Affected versions

<= 1.0.0

Patched versions

None

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.

References

Published by the National Vulnerability Database Oct 24, 2019
Reviewed Oct 25, 2019
Published to the GitHub Advisory Database Oct 25, 2019
Last updated Aug 25, 2023

Severity

High
7.8
/ 10

CVSS base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2019-18409

GHSA ID

GHSA-hhwc-8g49-j8jx

Source code

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