{"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\/pt\/blog\/news\/vypusk-sistemy-filtratsii-spama-spamassassin-3-4-3","title":{"rendered":"Lan\u00e7amento do sistema de filtragem de spam SpamAssassin 3.4.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Ap\u00f3s um ano de desenvolvimento <noindex><a rel=\"nofollow\" href=\"https:\/\/spamassassin.apache.org\/news.html\">dispon\u00edvel<\/a><\/noindex> lan\u00e7amento da plataforma de filtragem de spam \u2014 <noindex><a rel=\"nofollow\" href=\"http:\/\/spamassassin.apache.org\">SpamAssassin 3.4.3<\/a><\/noindex>. O SpamAssassin implementa uma abordagem abrangente na tomada de decis\u00f5es sobre bloqueio: a mensagem \u00e9 submetida a uma s\u00e9rie de verifica\u00e7\u00f5es (an\u00e1lise contextual, listas negras e brancas do DNSBL, classificadores bayesianos trein\u00e1veis, verifica\u00e7\u00e3o por assinaturas, autentica\u00e7\u00e3o do remetente via SPF e DKIM, etc.). Ap\u00f3s a avalia\u00e7\u00e3o da mensagem por diferentes m\u00e9todos, um determinado coeficiente de peso \u00e9 acumulado. Se o coeficiente calculado exceder um determinado limiar \u2014 a mensagem \u00e9 bloqueada ou marcada como spam. Recursos de atualiza\u00e7\u00e3o autom\u00e1tica das regras de filtragem s\u00e3o suportados. O pacote pode ser utilizado tanto em sistemas cliente quanto em sistemas servidor. O c\u00f3digo do SpamAssassin \u00e9 escrito na linguagem Perl e distribu\u00eddo sob a licen\u00e7a 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\">Caracter\u00edsticas<\/a><\/noindex> nova vers\u00e3o:<\/p>\n<ul>\n<li class=\"l\"> Adicionado um novo plugin OLEVBMacro, destinado \u00e0 detec\u00e7\u00e3o de macros OLE e c\u00f3digo VB dentro de documentos;\n<li class=\"l\"> Aumentada a velocidade e seguran\u00e7a da an\u00e1lise de grandes mensagens com as configura\u00e7\u00f5es body_part_scan_size e<br \/>\nrawbody_part_scan_size settings;<\/p>\n<li class=\"l\"> Nas regras de processamento do corpo do e-mail (body), foi adicionada a compatibilidade com a flag \u00abnosubject\u00bb para interromper a busca pelo cabe\u00e7alho Subject como parte do texto no corpo do e-mail;\n<li class=\"l\"> Por quest\u00f5es de seguran\u00e7a, a op\u00e7\u00e3o \u2018sa-update \u2014allowplugins\u2019 foi considerada obsoleta;\n<li class=\"l\"> Nas configura\u00e7\u00f5es, foi adicionada uma nova palavra-chave \u00absubjprefix\u00bb para adicionar um prefixo ao assunto do e-mail ao acionar uma regra. Foi adicionado um tag \u00ab_SUBJPREFIX_\u00bb, refletindo o valor da configura\u00e7\u00e3o \u00absubjprefix\u00bb;\n<li class=\"l\"> No plugin DNSEval, uma op\u00e7\u00e3o rbl_headers foi adicionada para determinar os cabe\u00e7alhos que precisam ser verificados nas listas RBL;\n<li class=\"l\"> Adicionada a fun\u00e7\u00e3o check_rbl_ns_from para verificar o servidor DNS na lista RBL. A fun\u00e7\u00e3o check_rbl_rcvd foi adicionada para verificar dom\u00ednios ou IPs de todos os cabe\u00e7alhos Received na RBL;\n<li class=\"l\"> Na fun\u00e7\u00e3o check_hashbl_emails, op\u00e7\u00f5es foram adicionadas para determinar os cabe\u00e7alhos cujo conte\u00fado deve ser verificado na RBL ou ACL;\n<li class=\"l\"> Adicionada a fun\u00e7\u00e3o check_hashbl_bodyre para busca no corpo da mensagem usando express\u00f5es regulares e verifica\u00e7\u00e3o de coincid\u00eancias encontradas na RBL;\n<li class=\"l\"> Adicionada a fun\u00e7\u00e3o check_hashbl_uris para identificar URLs no corpo da mensagem e sua verifica\u00e7\u00e3o na RBL;\n<li class=\"l\"> Corrigida uma vulnerabilidade (CVE-2018-11805) que permitia a execu\u00e7\u00e3o de comandos do sistema a partir de arquivos CF (arquivos de configura\u00e7\u00e3o do SpamAssassin) sem a exibi\u00e7\u00e3o de informa\u00e7\u00f5es sobre sua execu\u00e7\u00e3o;\n<li class=\"l\"> Uma vulnerabilidade foi corrigida (CVE-2019-12420), que pode ser usada para provocar uma nega\u00e7\u00e3o de servi\u00e7o ao processar um e-mail com uma se\u00e7\u00e3o Multipart especialmente formatada.\n<\/ul>\n<p>Os desenvolvedores do SpamAssassin tamb\u00e9m anunciaram o desenvolvimento da vers\u00e3o 4.0, que contar\u00e1 com suporte completo para processamento nativo de UTF-8. Em 1\u00ba de mar\u00e7o de 2020, a publica\u00e7\u00e3o de regras com assinaturas baseadas no algoritmo SHA-1 tamb\u00e9m ser\u00e1 descontinuada (na vers\u00e3o 3.4.2, fun\u00e7\u00f5es de hash SHA-256 e SHA-512 substituir\u00e3o o 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 5.0.3 - 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 Gagarin\"\/>\n\t<link 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