{"id":103954,"date":"2022-05-04T21:36:46","date_gmt":"2022-05-04T19:36:46","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kompaniya-cisco-vypustila-svobodnyj-antivirusnyj-paket-clamav-0-105"},"modified":"2022-05-04T21:36:46","modified_gmt":"2022-05-04T19:36:46","slug":"kompaniya-cisco-vypustila-svobodnyj-antivirusnyj-paket-clamav-0-105","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/kompaniya-cisco-vypustila-svobodnyj-antivirusnyj-paket-clamav-0-105","title":{"rendered":"A Cisco lan\u00e7ou o pacote antiv\u00edrus gratuito ClamAV 0.105","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A empresa Cisco apresentou um novo lan\u00e7amento significativo do pacote antiv\u00edrus gratuito ClamAV 0.105.0 e tamb\u00e9m publicou lan\u00e7amentos de corre\u00e7\u00e3o do ClamAV 0.104.3 e 0.103.6, corrigindo vulnerabilidades e erros. Lembramos que o projeto passou para as m\u00e3os da Cisco em 2013, ap\u00f3s a compra da empresa Sourcefire, que desenvolveu o ClamAV e o Snort. O c\u00f3digo do projeto \u00e9 distribu\u00eddo sob a licen\u00e7a GPLv2.    <\/p>\n<p>Principais melhorias no ClamAV 0.105:   <\/p>\n<ul>\n<li class=\"l\"> O compilador da linguagem Rust foi inclu\u00eddo entre as depend\u00eancias obrigat\u00f3rias para compila\u00e7\u00e3o. \u00c9 necess\u00e1rio ter pelo menos a vers\u00e3o 1.56 do Rust. As bibliotecas de depend\u00eancias em Rust est\u00e3o inclu\u00eddas no pacote principal do ClamAV.\n<li class=\"l\"> O c\u00f3digo para a atualiza\u00e7\u00e3o incremental do banco de dados (CDIFF) foi reescrito em Rust. A nova implementa\u00e7\u00e3o permitiu acelerar significativamente a aplica\u00e7\u00e3o de atualiza\u00e7\u00f5es que removem um grande n\u00famero de assinaturas do banco de dados. Este \u00e9 o primeiro m\u00f3dulo reescrito em Rust.\n<li class=\"l\"> Os valores de limites padr\u00e3o foram aumentados:\n<ul>\n<li class=\"l\"> MaxScanSize: 100M &gt; 400M\n<li class=\"l\"> MaxFileSize: 25M &gt; 100M\n<li class=\"l\"> StreamMaxLength: 25M &gt; 100M\n<li class=\"l\"> PCREMaxFileSize: 25M &gt; 100M\n<li class=\"l\"> MaxEmbeddedPE: 10M &gt; 40M\n<li class=\"l\"> MaxHTMLNormalize: 10M &gt; 40M\n<li class=\"l\"> MaxScriptNormalize: 5M &gt; 20M\n<li class=\"l\"> MaxHTMLNoTags: 2M &gt; 8M\n<li class=\"l\"> O tamanho m\u00e1ximo da linha nos arquivos de configura\u00e7\u00e3o freshclam.conf e clamd.conf foi aumentado de 512 para 1024 caracteres (ao especificar tokens de acesso, o par\u00e2metro DatabaseMirror poderia exceder 512 bytes).    <\/ul>\n<li class=\"l\"> Para a detec\u00e7\u00e3o de imagens usadas para phishing ou na dissemina\u00e7\u00e3o de malware, foi implementado suporte a um novo tipo de assinatura l\u00f3gica, que utiliza o m\u00e9todo de hashing difuso (fuzzy hashing), permitindo identificar objetos semelhantes com um certo grau de probabilidade. Para gerar o hash difuso para uma imagem, pode-se usar o comando &#171;sigtool &#8212;fuzzy-img&#187;.\n<li class=\"l\"> O ClamScan e o ClamDScan agora t\u00eam a capacidade de escanear a mem\u00f3ria dos processos. Essa funcionalidade foi transferida do pacote ClamWin e \u00e9 espec\u00edfica para a plataforma Windows. O ClamScan e o ClamDScan na plataforma Windows t\u00eam novas op\u00e7\u00f5es &#171;&#8212;memory&#187;, &#171;&#8212;kill&#187; e &#171;&#8212;unload&#187;.\n<li class=\"l\"> Os componentes de runtime para execu\u00e7\u00e3o de bytecode, baseados em LLVM, foram atualizados. Para aumentar o desempenho de escaneamento em compara\u00e7\u00e3o com o interpretador de bytecode fornecido por padr\u00e3o, foi proposta uma modalidade de compila\u00e7\u00e3o JIT. O suporte para vers\u00f5es antigas do LLVM foi interrompido, e agora podem ser utilizadas vers\u00f5es do LLVM de 8 a 12.\n<li class=\"l\"> No Clamd foi adicionada a configura\u00e7\u00e3o GenerateMetadataJson, equivalente \u00e0 op\u00e7\u00e3o &#171;&#8212;gen-json&#187; no clamscan, que resulta na grava\u00e7\u00e3o em um arquivo metadata.json dos metadados do processo de varredura no formato JSON.\n<li class=\"l\"> Foi possibilitada a compila\u00e7\u00e3o utilizando a biblioteca externa TomsFastMath (libtfm), que pode ser inclu\u00edda com as op\u00e7\u00f5es &#171;-D ENABLE_EXTERNAL_TOMSFASTMATH=ON&#187;, &#171;-D TomsFastMath_INCLUDE_DIR=&lt;path&gt;&#187; e &#171;-D TomsFastMath_LIBRARY=&lt;path&gt;&#187;. A c\u00f3pia da biblioteca TomsFastMath inclu\u00edda foi atualizada para a vers\u00e3o 0.13.1.\n<li class=\"l\"> Na ferramenta Freshclam, melhorou-se o comportamento ao processar o timeout ReceiveTimeout, que agora interrompe apenas downloads pendentes e n\u00e3o interrompe downloads ativos lentos que est\u00e3o transmitindo dados por canais de comunica\u00e7\u00e3o de baixa qualidade.\n<li class=\"l\"> Adicionada a suporte para compila\u00e7\u00e3o do ClamdTop usando a biblioteca ncursesw na aus\u00eancia de ncurses.\n<li class=\"l\"> Vulnerabilidades corrigidas:\n<ul>\n<li class=\"l\"> CVE-2022-20803 &#8212; libera\u00e7\u00e3o dupla de mem\u00f3ria no parser de arquivos OLE2.\n<li class=\"l\"> CVE-2022-20770 &#8212; loop infinito no parser de arquivos CHM.\n<li class=\"l\"> CVE-2022-20796 &#8212; falha catastr\u00f3fica devido \u00e0 desreferencia\u00e7\u00e3o de um ponteiro nulo no c\u00f3digo de verifica\u00e7\u00e3o de cache.\n<li class=\"l\"> CVE-2022-20771 &#8212; loop infinito no parser de arquivos TIFF.\n<li class=\"l\"> CVE-2022-20785 &#8212; vazamento de mem\u00f3ria no parser HTML e normalizador de Javascript.\n<li class=\"l\"> CVE-2022-20792 &#8212; estouro de buffer no m\u00f3dulo de carregamento do banco de dados de assinaturas.  <\/ul>\n<\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57133\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Cisco \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043d\u043e\u0432\u044b\u0439 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u0430\u043d\u0442\u0438\u0432\u0438\u0440\u0443\u0441\u043d\u043e\u0433\u043e \u043f\u0430\u043a\u0435\u0442\u0430 ClamAV 0.105.0, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 ClamAV 0.104.3 \u0438 0.103.6 \u0441 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0438 \u043e\u0448\u0438\u0431\u043e\u043a. \u041d\u0430\u043f\u043e\u043c\u043d\u0438\u043c, \u0447\u0442\u043e \u043f\u0440\u043e\u0435\u043a\u0442 \u043f\u0435\u0440\u0435\u0448\u0451\u043b \u0432 \u0440\u0443\u043a\u0438 Cisco \u0432 2013 \u0433\u043e\u0434\u0443 \u043f\u043e\u0441\u043b\u0435 \u043f\u043e\u043a\u0443\u043f\u043a\u0438 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Sourcefire, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0435\u0439 ClamAV \u0438 Snort. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv2. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u044f \u0432 ClamAV 0.105: \u0412 [&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-103954","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=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Cisco \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043d\u043e\u0432\u044b\u0439 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