critical9.8
CVE-2021-33564
Dragonfly contains remote code execution vulnerability
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| rubygems | dragonfly | < 1.4.0 | 1.4.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Dragonfly Project | Dragonfly | before 1.4.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/markevans/dragonfly/commit/25399297bb457f7fcf8e3f91e85945b255b111b5
- https://github.com/markevans/dragonfly/compare/v1.3.0...v1.4.0
- https://github.com/markevans/dragonfly/issues/513
- https://github.com/mlr0p/CVE-2021-33564
- https://raw.githubusercontent.com/projectdiscovery/nuclei-templates/master/cves/2021/CVE-2021-33564.yaml
- https://zxsecurity.co.nz/research/argunment-injection-ruby-dragonfly/
- https://github.com/advisories/GHSA-j858-xp5v-f8xx
- https://nvd.nist.gov/vuln/detail/CVE-2021-33564
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/dragonfly/CVE-2021-33564.yml