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-rw-r--r--modules/libpref/init/all.js8
1 files changed, 8 insertions, 0 deletions
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index 2a50d3704..5eed08f86 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -5440,3 +5440,11 @@ pref("prompts.authentication_dialog_abuse_limit", 0);
// Whether module scripts (<script type="module">) are enabled for content.
pref("dom.moduleScripts.enabled", true);
+// Report details when a media source error occurs?
+// Enabled by default in debug builds, otherwise should be explicitly enabled
+// by the user to prevent XO leaking of the response status (CVE-2020-15666)
+#ifdef DEBUG
+pref("media.sourceErrorDetails.enabled", true);
+#else
+pref("media.sourceErrorDetails.enabled", false);
+#endif