WordPress <= 6.9.1 - Unauthenticated Blind Server-Side Request Forgery via XML-RPC Pingback Discovery
Strategic Overview
6.8 – 6.9.1 · 2 branchesN/AVulnerability Overview
WordPress core is vulnerable to Blind Server-Side Request Forgery in all versions up to and including 6.9.1. This is due to the `WP_HTTP_IXR_Client` class using `wp_remote_post()` instead of the safer `wp_safe_remote_post()` when making outgoing XML-RPC pingback requests. This makes it possible for unauthenticated attackers to make web requests to arbitrary internal locations originating from the WordPress server, which can be used to query and modify information from internal services.
Technical Analysis
REMEDIATION: Update to one of the following versions, or a newer patched version: 6.8.4, 6.9.2 --- IDENTIFIER: CWE-918 (Server-Side Request Forgery (SSRF)) The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
External References
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