{"id":144089,"date":"2025-10-03T17:12:04","date_gmt":"2025-10-03T15:12:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-openssl-3-6-0-s-podderzhkoj-evp_skey-i-ustraneniem-perepolneniya-bufera"},"modified":"2025-10-03T17:12:04","modified_gmt":"2025-10-03T15:12:04","slug":"vypusk-openssl-3-6-0-s-podderzhkoj-evp_skey-i-ustraneniem-perepolneniya-bufera","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/vypusk-openssl-3-6-0-s-podderzhkoj-evp_skey-i-ustraneniem-perepolneniya-bufera","title":{"rendered":"Lan\u00e7amento do OpenSSL 3.6.0 com suporte a EVP_SKEY e corre\u00e7\u00e3o de estouro de buffer","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Foi lan\u00e7ada a biblioteca OpenSSL 3.6.0, que oferece a implementa\u00e7\u00e3o dos protocolos SSL\/TLS e de v\u00e1rios algoritmos de criptografia. O OpenSSL 3.6 \u00e9 classificado como uma vers\u00e3o com ciclo de suporte regular, com atualiza\u00e7\u00f5es lan\u00e7adas durante 13 meses. O suporte para as vers\u00f5es anteriores OpenSSL 3.5 LTS, 3.4, 3.3, 3.2 e 3.0 LTS continuar\u00e1 at\u00e9 abril de 2030, outubro de 2026, abril de 2026, novembro de 2025 e setembro de 2026, respectivamente. O c\u00f3digo do projeto \u00e9 distribu\u00eddo sob a licen\u00e7a Apache 2.0.     <\/p>\n<p>Principais inova\u00e7\u00f5es:   <\/p>\n<ul>\n<li class=\"l\"> Foi adicionada a suporte \u00e0 estrutura EVP_SKEY (Chave Sim\u00e9trica) para representar chaves sim\u00e9tricas como objetos opacos. Ao contr\u00e1rio das chaves brutas, apresentadas como um array de bytes, a estrutura da chave EVP_SKEY \u00e9 abstra\u00edda e cont\u00e9m metadados adicionais. A utiliza\u00e7\u00e3o da EVP_SKEY \u00e9 permitida em fun\u00e7\u00f5es de criptografia, troca de chaves e formata\u00e7\u00e3o de chaves (KDF). Para manipula\u00e7\u00e3o de chaves EVP_SKEY, foram adicionadas as fun\u00e7\u00f5es EVP_KDF_CTX_set_SKEY(), EVP_KDF_derive_SKEY() e EVP_PKEY_derive_SKEY().\n<li class=\"l\"> Foi adicionada a suporte para verifica\u00e7\u00e3o de assinaturas digitais com base no esquema LMS (Leighton-Micali Signatures), que utiliza fun\u00e7\u00f5es de hash e hashing em \u00e1rvore na forma de uma \u00c1rvore Merkle (Merkle Tree, onde cada ramifica\u00e7\u00e3o verifica todos os ramos e n\u00f3s subjacentes). As assinaturas digitais LMS s\u00e3o resistentes a ataques de computadores qu\u00e2nticos e foram desenvolvidas para garantir a integridade de firmwares e aplicativos.\n<li class=\"l\"> Adicionada suporte para categorias de seguran\u00e7a NIST para par\u00e2metros de objetos PKEY (chaves p\u00fablicas e privadas). A categoria de seguran\u00e7a \u00e9 definida atrav\u00e9s da configura\u00e7\u00e3o &#171;security-category&#187;. Para verificar o n\u00edvel de seguran\u00e7a, foi adicionada a fun\u00e7\u00e3o EVP_PKEY_get_security_category(). O n\u00edvel de seguran\u00e7a reflete a resist\u00eancia a quebras em computadores qu\u00e2nticos e pode assumir valores inteiros de 0 a 5:\n<ul>\n<li class=\"l\"> 0 &#8212; implementa\u00e7\u00e3o n\u00e3o resistente a ataques em computadores qu\u00e2nticos;\n<li class=\"l\">  1\/3\/5 &#8212; a implementa\u00e7\u00e3o n\u00e3o exclui a busca em um computador qu\u00e2ntico por uma chave em um bloco de cifra com chave de 128\/192\/256 bits;\n<li class=\"l\">  2\/4 &#8212; a implementa\u00e7\u00e3o n\u00e3o exclui a busca em um computador qu\u00e2ntico por colis\u00f5es em um hash de 256\/384 bits).   <\/ul>\n<li class=\"l\"> Adicionada a comando &#171;openssl configutl&#187; para processar arquivos de configura\u00e7\u00e3o. A ferramenta permite gerar um arquivo de resumo com todas as configura\u00e7\u00f5es com base em uma configura\u00e7\u00e3o multimodal com inclus\u00f5es.\n<li class=\"l\"> O provedor de criptografia FIPS adicionou suporte \u00e0 gera\u00e7\u00e3o determin\u00edstica de assinaturas digitais ECDSA (uma mesma assinatura \u00e9 gerada para as mesmas entradas), conforme os requisitos do padr\u00e3o FIPS 186-5.\n<li class=\"l\"> Os requisitos para o ambiente de compila\u00e7\u00e3o foram elevados. Agora, para compilar o OpenSSL, n\u00e3o \u00e9 suficiente ter ferramentas que suportem ANSI-C, sendo necess\u00e1rio um compilador compat\u00edvel com o padr\u00e3o C-99.\n<li class=\"l\"> As fun\u00e7\u00f5es relacionadas \u00e0 estrutura EVP_PKEY_ASN1_METHOD foram declaradas obsoletas.\n<li class=\"l\"> O suporte \u00e0 plataforma VxWorks foi descontinuado.                  <\/ul>\n<p>Vulnerabilidades corrigidas:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2025-9230 &#8212; vulnerabilidade no c\u00f3digo de descriptografia de mensagens CMS, criptografadas com senha (PWRI). A vulnerabilidade pode resultar na grava\u00e7\u00e3o e leitura de dados fora do buffer designado, permitindo a inicia\u00e7\u00e3o de uma falha ou corrup\u00e7\u00e3o de mem\u00f3ria em aplicativos que utilizam OpenSSL para processar mensagens CMS. N\u00e3o se pode excluir a explora\u00e7\u00e3o da vulnerabilidade para execu\u00e7\u00e3o de c\u00f3digo pr\u00f3prio, mas a gravidade do problema \u00e9 atenuada pelo fato de que a criptografia de mensagens CMS com senha \u00e9 raramente utilizada na pr\u00e1tica. Al\u00e9m da vers\u00e3o OpenSSL 3.6.0, a vulnerabilidade foi corrigida nas vers\u00f5es OpenSSL 3.5.4, 3.4.3, 3.3.5, 3.2.6 e 3.0.18. O problema tamb\u00e9m foi resolvido nas atualiza\u00e7\u00f5es da biblioteca LibreSSL 4.0.1 e 4.1.1, desenvolvidas pelo projeto OpenBSD.\n<li class=\"l\"> CVE-2025-9231 &#8212; a implementa\u00e7\u00e3o do algoritmo SM2 \u00e9 vulner\u00e1vel a ataques por canais laterais, permitindo que em sistemas com CPU ARM de 64 bits se reconstitua a chave privada ao analisar a varia\u00e7\u00e3o no tempo de execu\u00e7\u00e3o de c\u00e1lculos individuais. Potencialmente, o ataque pode ser realizado remotamente. A gravidade do ataque \u00e9 atenuada pelo fato de que o OpenSSL n\u00e3o suporta diretamente o uso de certificados com chaves SM2 no TLS.\n<li class=\"l\"> CVE-2025-9232 \u2014 uma vulnerabilidade na implementa\u00e7\u00e3o do cliente HTTP embutido, que resulta na leitura de dados fora do buffer ao processar URLs especificamente formatados nas fun\u00e7\u00f5es do Cliente HTTP. O problema ocorre apenas quando a vari\u00e1vel de ambiente \u00abno_proxy\u00bb est\u00e1 definida e pode resultar na interrup\u00e7\u00e3o abrupta do aplicativo.           <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63979\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 OpenSSL 3.6.0, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u0439 \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 SSL\/TLS \u0438 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u0432 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f. OpenSSL 3.6 \u043e\u0442\u043d\u0435\u0441\u0451\u043d \u043a \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u043c \u0441 \u043e\u0431\u044b\u0447\u043d\u044b\u043c \u0441\u0440\u043e\u043a\u043e\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438, \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u044e\u0442\u0441\u044f \u0432 \u0442\u0435\u0447\u0435\u043d\u0438\u0435 13 \u043c\u0435\u0441\u044f\u0446\u0435\u0432. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043f\u0440\u043e\u0448\u043b\u044b\u0445 \u0432\u0435\u0442\u043e\u043a OpenSSL 3.5 LTS, 3.4, 3.3, 3.2 \u0438 3.0 LTS \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2030 \u0433\u043e\u0434\u0430, \u043e\u043a\u0442\u044f\u0431\u0440\u044f 2026 \u0433\u043e\u0434\u0430, \u0430\u043f\u0440\u0435\u043b\u044f 2026 \u0433\u043e\u0434\u0430, \u043d\u043e\u044f\u0431\u0440\u044f [&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-144089","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=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 OpenSSL 3.6.0, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u0439 \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 SSL\/TLS \u0438 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 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