CVE-2022-44276
Published: 28 June 2023
Summary
CVE-2022-44276 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Tecrail Responsive Filemanager. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 3.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2022-44276 is an unrestricted file upload vulnerability, tracked as CWE-434, that affects Responsive Filemanager versions prior to 9.12.0. The flaw permits an attacker to bypass intended upload restrictions, enabling the placement of arbitrary files on the server.
An unauthenticated remote attacker can exploit the issue over the network without user interaction, as reflected in the CVSS 9.8 vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Successful exploitation results in remote code execution with full control over confidentiality, integrity, and availability of the affected system.
Public proof-of-concept code demonstrating the bypass has been published on GitHub. The EPSS score has remained flat at a peak of 0.2655 with no material rise after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-47224
Vulnerability details
In Responsive Filemanager < 9.12.0, an attacker can bypass upload restrictions resulting in RCE.
- 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.