CVE-2021-33564: Argument Injection or Modification

May 29, 2021 (updated June 10, 2021)

An argument injection vulnerability in the Dragonfly gem 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

github.com/markevans/dragonfly/issues/513
nvd.nist.gov/vuln/detail/CVE-2021-33564

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