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Improper handling of double quotes in file name in Diffy in Windows environment

Critical severity GitHub Reviewed Published Jun 24, 2022 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

bundler diffy (RubyGems)

Affected versions

< 3.4.1

Patched versions

3.4.1

Description

The function that calls the diff tool in versions of Diffy prior to 3.4.1 does not properly handle double quotes in a filename when run in a Windows environment. This allows attackers to execute arbitrary commands via a crafted string.

References

Published by the National Vulnerability Database Jun 23, 2022
Published to the GitHub Advisory Database Jun 24, 2022
Reviewed Jun 25, 2022
Last updated Jan 27, 2023

Severity

Critical

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
Network
Attack complexity
Low
Privileges required
None
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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.193%
(58th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2022-33127

GHSA ID

GHSA-5ww9-9qp2-x524

Source code

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