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Arbitrary Code Execution in Rdoc

High severity GitHub Reviewed Published Sep 1, 2021 to the GitHub Advisory Database • Updated Jan 5, 2024

Package

bundler rdoc (RubyGems)

Affected versions

>= 3.11, < 6.1.2.1
>= 6.2.0, < 6.2.1.1
>= 6.3.0, < 6.3.1

Patched versions

6.1.2.1
6.2.1.1
6.3.1

Description

In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a filename.

References

Published by the National Vulnerability Database Jul 30, 2021
Reviewed Aug 2, 2021
Published to the GitHub Advisory Database Sep 1, 2021
Last updated Jan 5, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.065%
(29th percentile)

Weaknesses

CVE ID

CVE-2021-31799

GHSA ID

GHSA-ggxm-pgc9-g7fp

Source code

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