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CVE-2018-11646 is a vulnerability in the WebKitGTK+ implementation of WebKit, specifically in the webkitFaviconDatabaseSetIconForPageURL and webkitFaviconDatabaseSetIconURLForPageURL functions in UIProcess/API/glib/WebKitFaviconDatabase.cpp. The vulnerability is triggered when these functions are called with an unset (null or invalid) pageURL parameter, leading to an application crash due to improper handling of the input. This issue is limited to the GLib-specific code used by WebKitGTK+ and does not affect Safari or WPE. The vulnerability was confirmed via backtrace analysis and a JavaScript proof-of-concept.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (2 hidden).
This repository contains a single Metasploit auxiliary module (modules/auxiliary/dos/http/webkitplus.rb) that exploits CVE-2018-11646, a denial of service vulnerability in WebKitGTK+'s WebKitFaviconDatabase. The module sets up an HTTP server that serves a crafted JavaScript payload. When a vulnerable client (such as a browser or application using WebKitGTK+) visits the server, the JavaScript manipulates window objects and document state in a way that triggers the vulnerability, causing the application to crash. The exploit is a proof-of-concept (POC) and does not provide post-exploitation capabilities. The only fingerprintable endpoint in the code is the hardcoded URL 'http://example.com/' used in the payload. The repository is structured as a typical Metasploit module, with Ruby code orchestrating the exploit and embedding the JavaScript payload.
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