CVE-2023-4634
Published: 06 September 2023
Summary
CVE-2023-4634 is a critical-severity External Control of File Name or Path (CWE-73) vulnerability in Davidlingren Media Library Assistant. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 0.3% 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 Media Library Assistant plugin for WordPress is vulnerable to local file inclusion and remote code execution in versions up to and including 3.09. The issue stems from insufficient validation of file paths supplied to the mla_stream_file parameter in the includes/mla-stream-image.php file, where images are processed using Imagick, enabling attackers to reference arbitrary resources.
Unauthenticated attackers can exploit the flaw by supplying files via FTP, resulting in directory listings, local file inclusion, and remote code execution with full confidentiality, integrity, and availability impact as reflected in the CVSS 9.8 score.
Public references including a Wordfence advisory and the plugin's changeset on WordPress Trac document the availability of a patched version that addresses the path-handling weakness, while proof-of-concept material has been published on GitHub and Packet Storm. The associated EPSS score remains elevated near its recorded peak of 0.9283.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-54487
Vulnerability details
The Media Library Assistant plugin for WordPress is vulnerable to Local File Inclusion and Remote Code Execution in versions up to, and including, 3.09. This is due to insufficient controls on file paths being supplied to the 'mla_stream_file' parameter from…
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the ~/includes/mla-stream-image.php file, where images are processed via Imagick(). This makes it possible for unauthenticated attackers to supply files via FTP that will make directory lists, local file inclusion, and remote code execution possible.
- 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.
Rejects externally supplied file or resource identifiers that fail validity checks.