{"id":40546,"date":"2020-02-01T20:58:18","date_gmt":"2020-02-01T17:58:18","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/vo-freebsd-ustraneny-tri-uyazvimosti"},"modified":"2020-02-01T20:58:18","modified_gmt":"2020-02-01T17:58:18","slug":"vo-freebsd-ustraneny-tri-uyazvimosti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/vo-freebsd-ustraneny-tri-uyazvimosti","title":{"rendered":"Tr\u00eas vulnerabilidades foram corrigidas no FreeBSD","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>No FreeBSD foram corrigidas tr\u00eas vulnerabilidades que permitem a execu\u00e7\u00e3o de c\u00f3digo ao utilizar libfetch, reenviar pacotes IPsec ou acessar dados do kernel. Os problemas foram resolvidos nas atualiza\u00e7\u00f5es 12.1-RELEASE-p2, 12.0-RELEASE-p13 e 11.3-RELEASE-p6. <\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-January\/001924.html\">CVE-2020-7450<\/a><\/noindex> \u2014 estouro de buffer na biblioteca libfetch, usada para download de arquivos no comando fetch, gerenciador de pacotes pkg e outras utilidades. A vulnerabilidade pode permitir a execu\u00e7\u00e3o de c\u00f3digo ao processar uma URL especialmente formatada. Um ataque pode ser realizado ao acessar um site controlado por um invasor, que pode iniciar o processamento de uma URL maliciosa atrav\u00e9s de um redirecionamento HTTP;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-January\/001926.html\">CVE-2019-15875<\/a><\/noindex> \u2014 vulnerabilidade no mecanismo de gera\u00e7\u00e3o de core dumps de processos. Devido a um erro, os core dumps registravam at\u00e9 20 bytes de dados da pilha do n\u00facleo, os quais poderiam conter informa\u00e7\u00f5es confidenciais processadas pelo sistema. Como uma solu\u00e7\u00e3o alternativa para prote\u00e7\u00e3o, \u00e9 poss\u00edvel desativar a gera\u00e7\u00e3o de arquivos core atrav\u00e9s do sysctl kern.coredump=0;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-January\/001925.html\">CVE-2019-5613<\/a><\/noindex> \u2014 erro no c\u00f3digo de bloqueio de reenvio de dados no IPsec permitia o reenvio de pacotes anteriormente capturados. Dependendo do protocolo de alto n\u00edvel transmitido sobre o IPsec, o problema identificado permite, por exemplo, reenviar comandos que j\u00e1 foram enviados anteriormente.\n<\/ul>\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=52277\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0442\u0440\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 libfetch, \u043f\u043e\u0432\u0442\u043e\u0440\u043d\u043e \u043e\u0442\u043f\u0440\u0430\u0432\u0438\u0442\u044c IPsec-\u043f\u0430\u043a\u0435\u0442\u044b \u0438\u043b\u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0434\u0430\u043d\u043d\u044b\u043c \u044f\u0434\u0440\u0430. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u044b \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 12.1-RELEASE-p2, 12.0-RELEASE-p13 \u0438 11.3-RELEASE-p6. CVE-2020-7450 &#8212; \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0431\u0443\u0444\u0435\u0440\u0430 \u0432 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 libfetch, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0444\u0430\u0439\u043b\u043e\u0432 \u0432 \u043a\u043e\u043c\u0430\u043d\u0434\u0435 fetch, \u043f\u0430\u043a\u0435\u0442\u043d\u043e\u043c \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440\u0435 pkg \u0438 \u0434\u0440\u0443\u0433\u0438\u0445 \u0443\u0442\u0438\u043b\u0438\u0442\u0430\u0445. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u043a\u043e\u0434\u0430 [&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":[],"tags":[],"class_list":["post-40546","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0442\u0440\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 libfetch, \u043f\u043e\u0432\u0442\u043e\u0440\u043d\u043e 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