Easy Digital Downloads – eCommerce Payments and Subscriptions made easy に脆弱性 — WF-f4250328-6d6c-4eb1-9ef2-334774c1d337

いま何をすべきか

Easy Digital Downloads – eCommerce Payments and Subscriptions made easy を 3.7.3 以降に更新してください。

影響を受けるバージョン

• 3.7.2 以下のすべて

The Easy Digital Downloads plugin for WordPress is vulnerable to authentication bypass leading to administrator account takeover in all versions up to, and including, 3.7.2. During a PayPal guest checkout, the email address entered in the guest-checkout field is trusted as proof of identity: edd_get_purchase_form_user() binds the new guest order to an existing WordPress user purely on an email-address match, rewriting the order's user_id to that user's ID. The PayPal capture sink PurchaseUser::maybe_log_in_after_capture() then looked the user up by the order email (get_user_by( 'email', $order->email )) and, when $order->user_id equalled that user's ID (which the email-binding step guarantees), issued an authenticated session with wp_set_auth_cookie(). An unauthenticated attacker who starts a guest checkout using an administrator's email address (where that administrator has no existing EDD customer record) and completes the PayPal purchase flow therefore receives an authenticated session as that administrator — a full account takeover. The same sink is reachable through the standard PayPal checkout and the REST UnbrandedCard and Fastlane flows.

この説明は公開データベースの記載をそのまま載せています。 日本語の要約は付けていません。訳の過程で意味が変わると、対応の判断を誤らせるためです。

• https://www.wordfence.com/threat-intel/vulnerabilities/id/f4250328-6d6c-4eb1-9ef2-334774c1d337?source=api-prod

この情報の一部は Wordfence Intelligence から取得しています。 原本: https://www.wordfence.com/threat-intel/vulnerabilities/id/f4250328-6d6c-4eb1-9ef2-334774c1d337
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