WP SVG Images <= 4.3 - Authenticated (Author+) Stored Cross-Site Scripting via SVG
Vulnerability Description
The WP SVG Images plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘type’ parameter in all versions up to, and including, 4.3 due to insufficient input sanitization. This makes it possible for authenticated attackers, with Author-level access and above, who have permissions to upload sanitized files, to bypass SVG sanitization and inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A bypass to the patch in version 4.3 was discovered and fixed completely in version 4.4.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Colin Xu
- Ryan Zegar
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/389d96e9-1fad-49a6-89b6-8f7f108d8117?source=cve
- https://plugins.trac.wordpress.org/browser/wp-svg-images/trunk/wp-svg-images.php#L111
- https://plugins.trac.wordpress.org/browser/wp-svg-images/trunk/wp-svg-images.php#L313
- https://plugins.trac.wordpress.org/changeset/3105276/
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3227378%40wp-svg-images&new=3227378%40wp-svg-images&sfp_email=&sfph_mail=
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