From 64b849ab0bd97c93ed40760f031f343e967e33ad Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Wed, 2 Aug 2023 11:36:54 -0400
Subject: [PATCH] Harden `spoof-css` scriptlet

---
 assets/resources/scriptlets.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/assets/resources/scriptlets.js b/assets/resources/scriptlets.js
index 2b348e7b9..54a6ed610 100644
--- a/assets/resources/scriptlets.js
+++ b/assets/resources/scriptlets.js
@@ -2897,6 +2897,17 @@ function spoofCSS(
                     }
                     return spoofStyle(prop, Reflect.get(target, prop, receiver));
                 },
+                getOwnPropertyDescriptor(target, prop) {
+                    if ( propToValueMap.has(prop) ) {
+                        return {
+                            configurable: true,
+                            enumerable: true,
+                            value: propToValueMap.get(prop),
+                            writable: true,
+                        };
+                    }
+                    return Reflect.getOwnPropertyDescriptor(target, prop);
+                },
             });
             return proxiedStyle;
         },