{"id":36033,"date":"2019-10-31T22:09:16","date_gmt":"2019-10-31T19:09:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vypusk-gnupg-2-2-17-s-izmeneniyami-dlya-protivostoyaniya-atake-na-servery-klyuchej\/"},"modified":"2019-10-31T22:09:16","modified_gmt":"2019-10-31T19:09:16","slug":"vypusk-gnupg-2-2-17-s-izmeneniyami-dlya-protivostoyaniya-atake-na-servery-klyuchej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/vypusk-gnupg-2-2-17-s-izmeneniyami-dlya-protivostoyaniya-atake-na-servery-klyuchej","title":{"rendered":"Utgivningen av GnuPG 2.2.17 med uppdateringar f\u00f6r att motverka angrepp p\u00e5 nyckelservrar.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/lists.gnupg.org\/pipermail\/gnupg-announce\/2019q3\/000439.html\">Publicerad<\/a><\/noindex>  verktygsutg\u00e5van  <noindex><a rel=\"nofollow\" href=\"https:\/\/gnupg.org\/\">GnuPG 2.2.17<\/a><\/noindex> (GNU Privacy Guard), kompatibel med OpenPGP-standarderna (<noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/rfc4880\">RFC-4880<\/a><\/noindex>) och S\/MIME, och erbjuder verktyg f\u00f6r kryptering av data, arbete med elektroniska signaturer, hantering av nycklar och \u00e5tkomst till offentliga nyckelf\u00f6rr\u00e5d. Observera att GnuPG 2.2-grenen positioneras som en utvecklingsutg\u00e5va d\u00e4r nya funktioner forts\u00e4tter att l\u00e4ggas till, medan endast korrigerande \u00e4ndringar till\u00e5ts i version 2.1.<\/p>\n<p>I den nya utg\u00e5van f\u00f6resl\u00e5s \u00e5tg\u00e4rder f\u00f6r att motverka <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51006\">attacker mot nyckelservrar<\/a><\/noindex>, vilket leder till att GnuPG h\u00e4nger sig och f\u00f6rhindrar vidare arbete tills det problematiska certifikatet tas bort fr\u00e5n det lokala f\u00f6rr\u00e5det eller certifikatf\u00f6rr\u00e5det \u00e5terskapas baserat p\u00e5 verifierade offentliga nycklar. Den tillagda skyddet bygger p\u00e5 att alla externa digitala signaturer av certifikat som mottagits fr\u00e5n nyckelf\u00f6rr\u00e5d ignoreras som standard. Kom ih\u00e5g att varje anv\u00e4ndare kan l\u00e4gga till sin digitala signatur f\u00f6r godtyckliga certifikat p\u00e5 nyckelservern, vilket missbrukas av angripare f\u00f6r att skapa ett stort antal s\u00e5dana signaturer (mer \u00e4n hundratusen) f\u00f6r ett offercertifikat, vilket st\u00f6r den normala driften av GnuPG.<\/p>\n<p>Ignorering av externa digitala signaturer regleras av alternativet &#171;self-sigs-only&#187;, vilket till\u00e5ter endast sj\u00e4lva signaturer av nyckelskaparna att laddas upp. F\u00f6r att \u00e5terst\u00e4lla det gamla beteendet kan inst\u00e4llningen &#171;keyserver-options no-self-sigs-only,no-import-clean&#187; l\u00e4ggas till i gpg.conf. Om det under arbetets g\u00e5ng noteras import av ett antal block som skulle orsaka \u00f6verbelastning av det lokala f\u00f6rr\u00e5det (pubring.kbx), aktiverar GnuPG automatiskt ignoreringsl\u00e4get f\u00f6r digitala signaturer (&#171;self-sigs-only,import-clean&#187;) ist\u00e4llet f\u00f6r att returnera ett felmeddelande. <\/p>\n<p>F\u00f6r att uppdatera nycklar med hj\u00e4lp av mekanismen <noindex><a rel=\"nofollow\" href=\"https:\/\/wiki.gnupg.org\/WKD\">Web Key Directory<\/a><\/noindex> (WKD) har alternativet &#171;&#8212;locate-external-key&#187; lagts till, vilket kan anv\u00e4ndas f\u00f6r att \u00e5terskapa certifikatf\u00f6rr\u00e5det baserat p\u00e5 verifierade offentliga nycklar. Vid utf\u00f6rande av operationen &#171;&#8212;auto-key-retrieve&#187; \u00e4r WKD-mekanismen nu mer att f\u00f6redra \u00e4n nyckelservrar. WKD:s funktion \u00e4r att placera offentliga nycklar p\u00e5 webben kopplade till dom\u00e4nen som anges i e-postadressen. Till exempel, f\u00f6r adressen &#171;test@example.com&#187; kan nyckeln laddas ner via l\u00e4nken &#171;https:\/\/example.com\/.well-known\/openpgpkey\/hu\/183d7d5ab73cfceece9a5594e6039d5a&#187;.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>K\u00e4lla: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51067\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f GnuPG 2.2.17 (GNU Privacy Guard), \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0433\u043e \u0441\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430\u043c\u0438 OpenPGP (RFC-4880) \u0438 S\/MIME, \u0438 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0443\u0442\u0438\u043b\u0438\u0442\u044b \u0434\u043b\u044f \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445, \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u044b\u043c\u0438 \u043f\u043e\u0434\u043f\u0438\u0441\u044f\u043c\u0438, \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043a\u043b\u044e\u0447\u0430\u043c\u0438 \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u044b\u043c \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430\u043c \u043a\u043b\u044e\u0447\u0435\u0439. \u041d\u0430\u043f\u043e\u043c\u043d\u0438\u043c, \u0447\u0442\u043e \u0432\u0435\u0442\u043a\u0430 GnuPG 2.2 \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043a\u0430\u043a \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u0432\u044b\u043f\u0443\u0441\u043a, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u044e\u0442 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u043d\u043e\u0432\u044b\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438, \u0432 \u0432\u0435\u0442\u043a\u0435 2.1 \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u044e\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\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-36033","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f GnuPG.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/sv\/blog\/news\/vypusk-gnupg-2-2-17-s-izmeneniyami-dlya-protivostoyaniya-atake-na-servery-klyuchej\" \/>\n\t\t<meta 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