CVE-2023-49052
Published: 30 November 2023
Summary
CVE-2023-49052 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Microweber Microweber. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 3.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
Microweber version 2.0.4 is affected by an unrestricted file upload vulnerability, tracked as CVE-2023-49052 and assigned CWE-434, that resides in the file upload function of the created forms component. The flaw permits a remote attacker to supply a crafted script that bypasses type restrictions, leading to a CVSS 3.1 base score of 8.8.
An unauthenticated attacker can exploit the issue over the network by submitting the malicious file through a publicly reachable form, achieving arbitrary code execution with the privileges of the web server process. Successful exploitation grants full control over the application and potentially the underlying host.
Public proof-of-concept code demonstrating the upload bypass has been published on GitHub, and the EPSS score has remained flat at 0.2627 since disclosure with no material increase observed. No official vendor advisory or patch information is referenced in the available sources.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-2847
Vulnerability details
File Upload vulnerability in Microweber v.2.0.4 allows a remote attacker to execute arbitrary code via a crafted script to the file upload function in the created forms component.
- 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.