{"id":53911,"date":"2019-12-13T00:00:00","date_gmt":"2019-12-12T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/vypusk-sistemy-filtratsii-spama-spamassassin-3-4-3"},"modified":"2020-02-18T14:01:51","modified_gmt":"2020-02-18T11:01:51","slug":"vypusk-sistemy-filtratsii-spama-spamassassin-3-4-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/vypusk-sistemy-filtratsii-spama-spamassassin-3-4-3","title":{"rendered":"Rilascio del sistema di filtraggio dello spam SpamAssassin 3.4.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dopo un anno di sviluppo <noindex><a rel=\"nofollow\" href=\"https:\/\/spamassassin.apache.org\/news.html\">\u00e8 disponibile<\/a><\/noindex> rilascio della piattaforma per il filtraggio dello spam \u2014 <noindex><a rel=\"nofollow\" href=\"http:\/\/spamassassin.apache.org\">SpamAssassin 3.4.3<\/a><\/noindex>. In SpamAssassin \u00e8 stato implementato un approccio completo alla decisione di bloccare: il messaggio viene sottoposto a una serie di controlli (analisi contestuale, liste nere e bianche DNSBL, classificatori bayesiani addestrabili, verifica per firme, autenticazione del mittente tramite SPF e DKIM, ecc.). Dopo la valutazione del messaggio tramite vari metodi, viene accumulato un determinato coefficiente di peso. Se il coefficiente calcolato supera una certa soglia \u2014 il messaggio viene bloccato o contrassegnato come spam. Sono supportati strumenti per l'aggiornamento automatico delle regole di filtraggio. Il pacchetto pu\u00f2 essere utilizzato sia su sistemi client che server. Il codice di SpamAssassin \u00e8 scritto in Perl ed \u00e8 distribuito con licenza Apache.<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"http:\/\/svn.apache.org\/repos\/asf\/spamassassin\/branches\/3.4\/build\/announcements\/3.4.3.txt\">Caratteristiche<\/a><\/noindex> nuova versione:<\/p>\n<ul>\n<li class=\"l\"> Aggiunto un nuovo plugin OLEVBMacro, progettato per rilevare OLE-macro e codice VB all'interno dei documenti;\n<li class=\"l\"> Aumentata la velocit\u00e0 e la sicurezza nella scansione di grandi email con le impostazioni body_part_scan_size e<br \/>\nrawbody_part_scan_size settings;<\/p>\n<li class=\"l\"> Nelle regole di elaborazione del corpo dell'email (body) \u00e8 stata aggiunta la supporto per il flag \u00abnosubject\u00bb per interrompere la ricerca dell'intestazione Subject come parte del testo nel corpo dell'email;\n<li class=\"l\"> Per motivi di sicurezza, l'opzione \u2018sa-update \u2014allowplugins\u2019 \u00e8 stata dichiarata obsoleta;\n<li class=\"l\"> Nelle impostazioni \u00e8 stata aggiunta una nuova parola chiave \u00absubjprefix\u00bb per aggiungere un prefisso all'oggetto dell'email quando viene attivata la regola. Nei modelli \u00e8 stato aggiunto il tag \u00ab_SUBJPREFIX_\u00bb, che riflette il valore dell'impostazione \u00absubjprefix\u00bb;\n<li class=\"l\"> Nel plugin DNSEval \u00e8 stata aggiunta l'opzione rbl_headers per determinare le intestazioni a cui applicare il controllo nelle liste RBL;\n<li class=\"l\"> Aggiunta la funzione check_rbl_ns_from per controllare il server DNS nell'elenco RBL. Aggiunta la funzione check_rbl_rcvd per verificare i domini o gli indirizzi IP da tutte le intestazioni Received in RBL;\n<li class=\"l\"> Nella funzione check_hashbl_emails sono state aggiunte opzioni per determinare le intestazioni il cui contenuto deve essere controllato in RBL o ACL;\n<li class=\"l\"> Aggiunta la funzione check_hashbl_bodyre per cercare nel corpo dell'email utilizzando una espressione regolare e verificare le corrispondenze trovate in RBL;\n<li class=\"l\"> Aggiunta la funzione check_hashbl_uris per identificare URL nel corpo dell'email e controllarli in RBL;\n<li class=\"l\"> Risolta una vulnerabilit\u00e0 (CVE-2018-11805) che consentiva di eseguire comandi di sistema da file CF (file di configurazione di SpamAssassin) senza visualizzare informazioni sulla loro esecuzione;\n<li class=\"l\"> Risolta una vulnerabilit\u00e0 (CVE-2019-12420) che poteva essere utilizzata per provocare un'interruzione del servizio durante l'elaborazione di un'email con una sezione Multipart formattata in modo specifico.\n<\/ul>\n<p>Gli sviluppatori di SpamAssassin hanno anche annunciato la preparazione della branch 4.0, in cui sar\u00e0 implementato un supporto integrato completo per UTF-8. Il primo marzo 2020 sar\u00e0 anche interrotta la pubblicazione delle regole con firme basate sull'algoritmo SHA-1 (nella versione 3.4.2, le funzioni hash SHA-256 e SHA-512 sostituiranno SHA-1).<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52014\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0433\u043e\u0434\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u0438 \u0441\u043f\u0430\u043c\u0430 &#8212; SpamAssassin 3.4.3. \u0412 SpamAssassin \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d \u043a\u043e\u043c\u043f\u043b\u0435\u043a\u0441\u043d\u044b\u0439 \u043f\u043e\u0434\u0445\u043e\u0434 \u0432 \u043f\u0440\u0438\u043d\u044f\u0442\u0438\u0438 \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u043e \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438: \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435 \u043f\u043e\u0434\u0432\u0435\u0440\u0433\u0430\u0435\u0442\u0441\u044f \u0440\u044f\u0434\u0443 \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u043a (\u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442\u043d\u044b\u0439 \u0430\u043d\u0430\u043b\u0438\u0437, \u0447\u0435\u0440\u043d\u044b\u0435 \u0438 \u0431\u0435\u043b\u044b\u0435 \u0441\u043f\u0438\u0441\u043a\u0438 DNSBL, \u043e\u0431\u0443\u0447\u0430\u0435\u043c\u044b\u0435 \u0431\u0430\u0439\u0435\u0441\u043e\u0432\u0441\u043a\u0438\u0435 \u043a\u043b\u0430\u0441\u0441\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b, \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u043f\u043e \u0441\u0438\u0433\u043d\u0430\u0442\u0443\u0440\u0430\u043c, \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f \u043e\u0442\u043f\u0440\u0430\u0432\u0438\u0442\u0435\u043b\u044f \u043f\u043e SPF \u0438 DKIM \u0438 \u0442.\u043f.). \u041f\u043e\u0441\u043b\u0435 \u043e\u0446\u0435\u043d\u043a\u0438 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u043d\u044b\u043c\u0438 \u043c\u0435\u0442\u043e\u0434\u0430\u043c\u0438, \u043d\u0430\u043a\u0430\u043f\u043b\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u044b\u0439 \u0432\u0435\u0441\u043e\u0432\u043e\u0439 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-53911","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0433\u043e\u0434\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u0438 \u0441\u043f\u0430\u043c\u0430 -\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri 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