CVEvulnerability
CVE-2021-33564
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2021-05-29
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-88
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.
Affected configurations
• dragonfly project dragonfly (< 1.4.0)
Related
Weakness · CWE (1)
- CWE-88 Improper Neutralization of Argument Delimiters in a Command weakness
References
- https://github.com/markevans/dragonfly/commit/25399297bb457f7fcf8e3f91e85945b255b111b5 Patch, Third Party Advisory
- https://github.com/markevans/dragonfly/compare/v1.3.0...v1.4.0 Patch, Third Party Advisory
- https://github.com/markevans/dragonfly/issues/513 Issue Tracking, Third Party Advisory
- https://github.com/mlr0p/CVE-2021-33564 Exploit, Third Party Advisory
- https://raw.githubusercontent.com/projectdiscovery/nuclei-templates/master/cves/2021/CVE-2021-33564.yaml Exploit, Third Party Advisory
- https://zxsecurity.co.nz/research/argunment-injection-ruby-dragonfly/ Exploit, Third Party Advisory
- https://github.com/markevans/dragonfly/commit/25399297bb457f7fcf8e3f91e85945b255b111b5 Patch, Third Party Advisory
- https://github.com/markevans/dragonfly/compare/v1.3.0...v1.4.0 Patch, Third Party Advisory
- https://github.com/markevans/dragonfly/issues/513 Issue Tracking, Third Party Advisory
- https://github.com/mlr0p/CVE-2021-33564 Exploit, Third Party Advisory
- https://raw.githubusercontent.com/projectdiscovery/nuclei-templates/master/cves/2021/CVE-2021-33564.yaml Exploit, Third Party Advisory
- https://zxsecurity.co.nz/research/argunment-injection-ruby-dragonfly/ Exploit, Third Party Advisory