CVE-2022-39833
Published: 23 November 2022
Summary
CVE-2022-39833 is a high-severity Code Injection (CWE-94) vulnerability in Filecloud Filecloud. Its CVSS base score is 7.2 (High).
Operationally, ranked in the top 7.0% 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-2022-39833 affects FileCloud versions 20.2 and later. The flaw permits remote attackers to submit a crafted HTTP request that reaches otherwise restricted API endpoints, resulting in unauthorized remote code execution. The vulnerability is tracked under CWE-94 and carries a CVSS 3.1 base score of 7.2, reflecting network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability when successfully exploited.
An attacker must possess high-privileged credentials to trigger the issue. Once authenticated, the crafted request can be used to execute arbitrary code on the server and obtain unauthorized access to the reported API surface, potentially leading to full system compromise.
Vendor advisories published by FileCloud address the issue and are available at the referenced URLs; they describe the affected versions and outline remediation steps for administrators. The associated EPSS score has remained flat at 0.0955 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-42278
Vulnerability details
FileCloud Versions 20.2 and later allows remote attackers to potentially cause unauthorized remote code execution and access to reported API endpoints via a crafted HTTP request.
- 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.
Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.
Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.
Validates inputs used in dynamic code generation to block injected directives.
Directly prevents execution of attacker-supplied code written into data memory regions.