{"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\/nl\/blog\/news\/vypusk-gnupg-2-2-17-s-izmeneniyami-dlya-protivostoyaniya-atake-na-servery-klyuchej","title":{"rendered":"Release van GnuPG 2.2.17 met wijzigingen ter bestrijding van aanvallen op sleutelservers","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\">Gepubliceerd<\/a><\/noindex>  release van de tools  <noindex><a rel=\"nofollow\" href=\"https:\/\/gnupg.org\/\">GnuPG 2.2.17<\/a><\/noindex> (GNU Privacy Guard), compatibel met de OpenPGP-standaarden (<noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/rfc4880\">RFC-4880<\/a><\/noindex>) en S\/MIME, en biedt hulpmiddelen voor dataversleuteling, het werken met digitale handtekeningen, het beheren van sleutels en toegang tot openbare sleutelopslagplaatsen. We herinneren eraan dat de GnuPG 2.2-tak wordt gepositioneerd als een doorontwikkelde release, waarin voortdurend nieuwe functionaliteiten worden toegevoegd; in de 2.1-tak worden alleen correctieve updates doorgevoerd.<\/p>\n<p>In de nieuwe release zijn maatregelen voorgesteld om <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51006\">aanvallen op sleuteldiensten<\/a><\/noindex>tegen te gaan, die leiden tot het vastlopen van GnuPG en de onmogelijkheid om verder te werken totdat het problematische certificaat uit de lokale opslag is verwijderd of de opslag van certificaten is herbouwd op basis van gevalideerde openbare sleutels. De toegevoegde bescherming is gebaseerd op het standaard volledig negeren van alle externe digitale handtekeningen van certificaten die van sleutelopslagservers zijn verkregen. We herinneren eraan dat elke gebruiker zijn digitale handtekening voor willekeurige certificaten aan een sleutelopslagserver kan toevoegen, wat door kwaadwillenden wordt gebruikt om voor het slachtoffer certificaat een enorme hoeveelheid van dergelijke handtekeningen (meer dan honderdduizend) te cre\u00ebren, waarvan de verwerking de normale werking van GnuPG verstoort.<\/p>\n<p>Het negeren van externe digitale handtekeningen wordt geregeld door de optie &#171;self-sigs-only&#187;, die alleen het uploaden van handtekeningen door de eigenaren van de sleutels toestaat. Om het oude gedrag te herstellen, kan de instelling &#171;keyserver-options no-self-sigs-only,no-import-clean&#187; aan gpg.conf worden toegevoegd. Als tijdens het proces het importeren van blokken vastgelegd wordt dat de lokale opslag (pubring.kbx) zou overstromen, schakelt GnuPG automatisch de modus voor het negeren van digitale handtekeningen in (&#171;self-sigs-only,import-clean&#187;) in plaats van een foutmelding te geven. <\/p>\n<p>Voor het bijwerken van sleutels met gebruik van het mechanisme <noindex><a rel=\"nofollow\" href=\"https:\/\/wiki.gnupg.org\/WKD\">Web Key Directory<\/a><\/noindex> (WKD) heeft de optie &#171;&#8212;locate-external-key&#187; toegevoegd, die kan worden gebruikt om een certificaatopslag opnieuw op te bouwen op basis van geverifieerde openbare sleutels. Tijdens de uitvoering van de bewerking &#171;&#8212;auto-key-retrieve&#187; is het WKD-mechanisme nu voorkeur boven sleutelservers. Het principe van WKD is het plaatsen van openbare sleutels op het web, gekoppeld aan het domein dat in het e-mailadres is opgegeven. Voor het e-mailadres &#171;test@example.com&#187; kan de sleutel bijvoorbeeld worden gedownload via de link &#171;https:\/\/example.com\/.well-known\/openpgpkey\/hu\/183d7d5ab73cfceece9a5594e6039d5a&#187;.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Bron: <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 5.0.3 - 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\/nl\/blog\/news\/vypusk-gnupg-2-2-17-s-izmeneniyami-dlya-protivostoyaniya-atake-na-servery-klyuchej\" \/>\n\t\t<meta 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