CVE-2020-22249
Published: 06 July 2021
Summary
CVE-2020-22249 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Phplist Phplist. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 13.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2020-15014
Vulnerability details
Remote Code Execution vulnerability in phplist 3.5.1. The application does not check any file extensions stored in the plugin zip file, Uploading a malicious plugin which contains the php files with extensions like PHP,phtml,php7 will be copied to the plugins…
more
directory which would lead to the remote code execution
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.