{"id":182030,"date":"2026-06-12T02:48:17","date_gmt":"2026-06-12T00:48:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-phpbb-pozvolyayushhaya-poluchit-dostup-k-lyubomu-akkauntu-bez-autentifikaczii"},"modified":"2026-06-12T02:48:17","modified_gmt":"2026-06-12T00:48:17","slug":"uyazvimost-v-phpbb-pozvolyayushhaya-poluchit-dostup-k-lyubomu-akkauntu-bez-autentifikaczii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/uyazvimost-v-phpbb-pozvolyayushhaya-poluchit-dostup-k-lyubomu-akkauntu-bez-autentifikaczii","title":{"rendered":"Vulnerabilit\u00e0 in phpBB che consente di accedere a qualsiasi account senza autenticazione","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00c8 stata scoperta una vulnerabilit\u00e0 nel motore di forum open source phpBB che consente di connettersi alla sessione di qualsiasi utente del forum inviando una singola richiesta HTTP. La vulnerabilit\u00e0 si presenta nella configurazione predefinita di phpBB. Il problema \u00e8 stato risolto nella versione phpBB 3.3.17.<\/p>\n

Con un attacco a utenti comuni \u00e8 possibile accedere alla corrispondenza privata e inviare messaggi a nome dell'utente. Attaccando moderatori e amministratori, \u00e8 possibile eliminare messaggi di altri utenti e visualizzare Indirizzi IP<\/a> e-mail, leggere la corrispondenza privata, ma non \u00e8 possibile accedere all'interfaccia di amministrazione e ottenere accesso all'host. <\/p>\n

Non vengono forniti dettagli sulla vulnerabilit\u00e0, ma grazie all'AI basata sulla correzione \u00e8 stato gi\u00e0 ricostruito un metodo di sfruttamento che si basa sulla chiamata al gestore «login_link» impostando il metodo di autenticazione «auth_provider=apache» e sostituendo il nome utente tramite Basic Auth, dopo di che PHP imposter\u00e0 la variabile di ambiente «PHP_AUTH_USER=nome_utente», e phpBB estrarr\u00e0 da essa il nome utente senza verificare la password. Ad esempio, per ottenere l'identificativo della sessione dell'utente admin e salvarlo nel file cookies.txt, \u00e8 possibile eseguire il codice:<\/p>\n

curl -i -s \
\n -c cookies.txt \
\n -b cookies.txt \
\n -u ‘admin:qualunque’ \
\n -d ‘login=Login&login_username=admin&login_password=qualunque’ \
\n ‘https:\/\/target.example\/forum\/ucp.php?mode=login_link&auth_provider=apache&login_link_any=1’
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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