{"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":"Versione del sistema di filtraggio 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\">disponibile<\/a><\/noindex> rilascio della piattaforma per il filtro della spam \u2014 <noindex><a rel=\"nofollow\" href=\"http:\/\/spamassassin.apache.org\">SpamAssassin 3.4.3<\/a><\/noindex>. SpamAssassin implementa un approccio integrato per decidere se bloccare: il messaggio viene sottoposto a una serie di controlli (analisi contestuale, liste nere e bianche DNSBL, classificatori bayesiani addestrabili, verifica tramite firme, autenticazione del mittente tramite SPF e DKIM, ecc.). Dopo aver valutato il messaggio con vari metodi, si accumula un coefficiente di peso specifico. 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 e 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> nuovo rilascio:<\/p>\n<ul>\n<li class=\"l\"> Aggiunto un nuovo plugin OLEVBMacro, progettato per identificare macro OLE e codice VB all'interno dei documenti;\n<li class=\"l\"> Aumentata la velocit\u00e0 e la sicurezza della scansione di grandi e-mail 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 del messaggio (body) \u00e8 stata aggiunta la supporto per il flag \u00abnosubject\u00bb per interrompere la ricerca dell'intestazione Subject come parte del testo nel corpo del messaggio;\n<li class=\"l\"> Per motivi di sicurezza, \u00e8 stata dichiarata obsoleta l'opzione \u2018sa-update \u2014allowplugins\u2019;\u201d\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. \u00c8 stato aggiunto un tag \u00ab_SUBJPREFIX_\u00bb nei modelli, 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 verificare il server DNS nell'elenco RBL. Aggiunta la funzione check_rbl_rcvd per controllare i domini o gli indirizzi IP da tutte le intestazioni Received nella RBL;\n<li class=\"l\"> Nella funzione check_hashbl_emails sono state aggiunte opzioni per determinare le intestazioni il cui contenuto deve essere controllato nella RBL o nell'ACL;\n<li class=\"l\"> Aggiunta la funzione check_hashbl_bodyre per cercare nel corpo dell'email utilizzando espressioni regolari e controllare le corrispondenze trovate nella RBL;\n<li class=\"l\"> Aggiunta la funzione check_hashbl_uris per identificare gli URL nel corpo dell'email e verificarli nella RBL;\n<li class=\"l\"> Risolto il problema di sicurezza (CVE-2018-11805), che consentiva l'esecuzione di comandi di sistema da file CF (file di configurazione di SpamAssassin) senza visualizzare informazioni sulla loro esecuzione;\n<li class=\"l\"> \u00c8 stata risolta una vulnerabilit\u00e0 (CVE-2019-12420) che pu\u00f2 essere sfruttata per generare un'interruzione del servizio durante l'elaborazione di un'email con una sezione Multipart appositamente formattata.\n<\/ul>\n<p>Gli sviluppatori di SpamAssassin hanno anche annunciato la preparazione della versione 4.0, che includer\u00e0 un'implementazione completa del supporto UTF-8. Il 1 marzo 2020 cesser\u00e0 inoltre la pubblicazione delle regole con firme basate sull'algoritmo SHA-1 (nella versione 3.4.2, SHA-1 sar\u00e0 sostituito dalle funzioni hash SHA-256 e SHA-512).<\/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 5.0.1.1 - 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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