#VU53840 Code Injection in Dragonfly - CVE-2021-33564
Published: June 7, 2021 / Updated: August 6, 2021
Vulnerability identifier: #VU53840
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2021-33564
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Dragonfly
Dragonfly
Software vendor:
Mark Evans
Mark Evans
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to the generate and process features mishandle use of the ImageMagick convert utility when the "verify_url" option is disabled. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.
External links
- https://github.com/markevans/dragonfly/compare/v1.3.0...v1.4.0
- https://github.com/markevans/dragonfly/commit/25399297bb457f7fcf8e3f91e85945b255b111b5
- 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/markevans/dragonfly/issues/513