CVE-2023-5953
Published: 04 December 2023
Summary
CVE-2023-5953 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Welcart Welcart E-Commerce. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 45.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-58225
Vulnerability details
The Welcart e-Commerce WordPress plugin before 2.9.5 does not validate files to be uploaded, as well as does not have authorisation and CSRF in an AJAX action handling such upload. As a result, any authenticated users, such as subscriber could…
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upload arbitrary files, such as PHP on the server
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Arbitrary file upload vulnerability allows low-privileged authenticated users (subscriber+) to upload executable PHP files (e.g., webshells) via an unauthenticated AJAX endpoint lacking validation, CSRF, and authorization checks, enabling exploitation of a public-facing web application and web shell deployment for remote code execution.
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.