WordPress Plugin Functionality: Upload Handling, Unzipping, and SSRF

Episode 55: In this episode of Critical Thinking - Bug Bounty Podcast, Justin is joined by Wordpress Security Researcher Ram Gall to discuss both functionality and vulnerabilities within Wordpress Plugins.

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Today’s Guest:

Ramuel Gall

UpdraftPlus Vuln

XML-RPC PingBack

Unicode and Character Sets

Reflected XSS

POP Chain

WordpressPluginDirectory

Subscriber+ RCE in Elementor

Subscriber+ SSRF

Unauthed XSS via User-Agent header

Timestamps:

(00:00:00) Introduction

(00:05:55) Add_action & Nonces

(00:26:16) Add_filter & Register_rest_routes

(00:38:39) Page-related code & Shortcodes

(00:50:24) Top Sinks for WP

(01:02:19) Echo & SQLI Sinks

(01:15:07) Nonce Leak and wp_handle_upload

(01:18:16) Page variables & Pop Chains

(01:26:55) WP Escalations & Bug Reports