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Dragonfly contains remote code execution vulnerability

Critical severity GitHub Reviewed Published Jun 2, 2021 to the GitHub Advisory Database • Updated Aug 25, 2023

Package

bundler dragonfly (RubyGems)

Affected versions

< 1.4.0

Patched versions

1.4.0

Description

An argument injection vulnerability in the Dragonfly gem before 1.4.0 for Ruby allows remote attackers to read and write to arbitrary files via a crafted URL when the verify_url option is disabled. This may lead to code execution. The problem occurs because the generate and process features mishandle use of the ImageMagick convert utility.

References

Published by the National Vulnerability Database May 29, 2021
Reviewed Jun 1, 2021
Published to the GitHub Advisory Database Jun 2, 2021
Last updated Aug 25, 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

12.437%
(96th percentile)

Weaknesses

CVE ID

CVE-2021-33564

GHSA ID

GHSA-j858-xp5v-f8xx

Source code

No known source code
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