| タイトル | wuzhicms <=4.1.0 SSRF |
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| 説明 | The rich-text editor's remote-image-fetch feature, attachment::ckeditor(), performs no login-state/cookie validation whatsoever (in stark contrast to file_brower() in the same file, which does require authentication). The action=catchimage branch calls ckditor::saveRemote(), which takes URLs from the user-submitted source[] array and hands each one to Uploader::saveRemote(). That method's only validation on the URL is strpos($imgUrl,"http")!==0 (merely requiring an http prefix) — there is no internal/private IP blacklist, no domain whitelist, and no port restriction. It then directly calls get_headers($imgUrl,1) and readfile($imgUrl,false,$context), causing the server to issue a request, under its own network identity, to any attacker-specified host:port. |
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| ソース | ⚠️ https://github.com/wuzhicms/wuzhicms/issues/221 |
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| ユーザー | ZAST.AI (UID 87884) |
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| 送信 | 2026年08月18日 12:07 (29 日 ago) |
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| モデレーション | 2026年09月16日 09:43 (29 days later) |
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| ステータス | 承諾済み |
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| VulDBエントリ | 405512 [WuzhiCMS 迄 4.1.0 Remote Image Fetch index.php ckditor::saveRemote source[] 特権昇格] |
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| ポイント | 19 |
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