CVE-2023-3342
Published: 13 July 2023
Summary
CVE-2023-3342 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Wpeverest User Registration. Its CVSS base score is 9.9 (Critical).
Operationally, ranked in the top 8.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
The User Registration plugin for WordPress is affected by an arbitrary file upload vulnerability in versions up to and including 3.0.2. The flaw stems from a hardcoded encryption key combined with missing file type validation in the ur_upload_profile_pic function, which permits unauthorized file writes on the server. The issue received a CVSS score of 9.9 and is tracked under CWE-434.
Authenticated attackers holding subscriber-level privileges or higher can exploit the weakness over the network to upload arbitrary files, including malicious payloads that may enable remote code execution on the affected site. The vulnerability was only partially addressed in version 3.0.2 and required a subsequent release to fully resolve.
Advisories and patch information indicate that the complete fix is available in version 3.0.2.1, with code changes documented in the plugin's changelog and tracked via WordPress plugin repository diffs. Security researchers have published technical details and proof-of-concept references confirming the upload path and the impact of the hardcoded key.
The EPSS score remains flat at 0.0679 with no material increase observed since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-44010
Vulnerability details
The User Registration plugin for WordPress is vulnerable to arbitrary file uploads due to a hardcoded encryption key and missing file type validation on the 'ur_upload_profile_pic' function in versions up to, and including, 3.0.2. This makes it possible for authenticated…
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attackers with subscriber-level capabilities or above to upload arbitrary files on the affected site's server which may make remote code execution possible. This was partially patched in version 3.0.2 and fully patched in version 3.0.2.1.
- 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.