CRITICAL

CVE-2021-33564

CVSS v3

9.8

CRITICAL

EPSS Score

93.4%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

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.

Technical details

Published
5/29/2021

Frequently asked questions

What is CVE-2021-33564?

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.

Is CVE-2021-33564 actively exploited?

Active exploitation of CVE-2021-33564 has not been confirmed. The EPSS score is 93.4%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-33564?

CVE-2021-33564 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2021-33564 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.