CVE-2023-3342
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 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.
- CVSS 3.1
- 9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 1.69% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- wpeverest/user registration
- Source
- security@wordfence.com
References
- https://lana.codes/lanavdb/c0a58dff-7a5b-4cc0-82d6-2255e61d801c/Exploit, Third Party Advisory
- https://plugins.trac.wordpress.org/browser/user-registration/tags/3.0.1/includes/functions-ur-core.php#L3156Patch
- https://plugins.trac.wordpress.org/changeset/2933689/user-registration/trunk/includes/functions-ur-core.phpPatch
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a979e885-f7dd-4616-a881-64f3d97c309d?source=cveThird Party Advisory
- http://packetstormsecurity.com/files/173434/WordPress-User-Registration-3.0.2-Arbitrary-File-Upload.htmlThird Party Advisory, VDB Entry
- https://lana.codes/lanavdb/c0a58dff-7a5b-4cc0-82d6-2255e61d801c/Exploit, Third Party Advisory
- https://plugins.trac.wordpress.org/browser/user-registration/tags/3.0.1/includes/functions-ur-core.php#L3156Patch
- https://plugins.trac.wordpress.org/changeset/2933689/user-registration/trunk/includes/functions-ur-core.phpPatch
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a979e885-f7dd-4616-a881-64f3d97c309d?source=cveThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.