A WordPress plugin add-on for the favored Elementor web page builder lately patched a vulnerability affecting over 200,000 installations. The exploit, discovered within the Jeg Elementor Package plugin, permits authenticated attackers to add malicious scripts.
Saved Cross-Website Scripting (Saved XSS)
The patch mounted a problem that would result in a Saved Cross-Website Scripting exploit that permits an attacker to add malicious recordsdata to a web site server the place it may be activated when a consumer visits the online web page. That is completely different from a Mirrored XSS which requires an admin or different consumer to be tricked into clicking a hyperlink that initiates the exploit. Each sorts of XSS can result in a full-site takeover.
Inadequate Sanitization And Output Escaping
Wordfence posted an advisory that famous the supply of the vulnerability is in lapse in a safety apply referred to as sanitization which is a typical requiring a plugin to filter what a consumer can enter into the web site. So if a picture or textual content is what’s anticipated then all different kinds of enter are required to be blocked.
One other situation that was patched concerned a safety apply referred to as Output Escaping which is a course of just like filtering that applies to what the plugin itself outputs, stopping it from outputting, for instance, a malicious script. What it particularly does is to transform characters that could possibly be interpreted as code, stopping a consumer’s browser from deciphering the output as code and executing a malicious script.
The Wordfence advisory explains:
“The Jeg Elementor Package plugin for WordPress is weak to Saved Cross-Website Scripting by way of SVG File uploads in all variations as much as, and together with, 2.6.7 as a result of inadequate enter sanitization and output escaping. This makes it doable for authenticated attackers, with Creator-level entry and above, to inject arbitrary internet scripts in pages that can execute at any time when a consumer accesses the SVG file.”
Medium Degree Risk
The vulnerability obtained a Medium Degree menace rating of 6.4 on a scale of 1 – 10. Customers are beneficial to replace to Jeg Elementor Package model 2.6.8 (or larger if obtainable).
Learn the Wordfence advisory:
Jeg Elementor Kit <= 2.6.7 – Authenticated (Author+) Stored Cross-Site Scripting via SVG File
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