{"id":42942,"date":"2020-02-17T14:41:56","date_gmt":"2020-02-17T11:41:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/obnovlenie-postgresql-s-ustraneniem-uyazvimosti-vypusk-sistemy-replikaczii-pgcat"},"modified":"2020-02-17T14:41:56","modified_gmt":"2020-02-17T11:41:56","slug":"obnovlenie-postgresql-s-ustraneniem-uyazvimosti-vypusk-sistemy-replikaczii-pgcat","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/obnovlenie-postgresql-s-ustraneniem-uyazvimosti-vypusk-sistemy-replikaczii-pgcat","title":{"rendered":"Opdatering af PostgreSQL med p\u00e5l\u00f8sning af s\u00e5rbarhed. Udgivelse af replikationssystemet pgcat","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/www.postgresql.org\/about\/news\/2011\/\">Genereret<\/a><\/noindex> korrektionsopdateringer til alle underst\u00f8ttede versioner af PostgreSQL: <noindex><a rel=\"nofollow\" href=\"https:\/\/www.postgresql.org\/docs\/current\/static\/release-12-2.html\">12.2<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.postgresql.org\/docs\/current\/static\/release-11-7.html\">11.7<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.postgresql.org\/docs\/current\/static\/release-10-12.html\">10.12<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"http:\/\/www.postgresql.org\/docs\/current\/static\/release-9-6-17.html\">9.6.17<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"http:\/\/www.postgresql.org\/docs\/current\/static\/release-9-5-21.html\">9.5.21<\/a><\/noindex> og <noindex><a rel=\"nofollow\" href=\"http:\/\/www.postgresql.org\/docs\/current\/static\/release-9-4-26.html\">9.4.26<\/a><\/noindex>. Udgivelse 9.4.26 er den sidste &#8212; forberedelse af opdateringer til 9.4-grenen <noindex><a rel=\"nofollow\" href=\"http:\/\/www.postgresql.org\/support\/versioning\/\">oph\u00f8rt<\/a><\/noindex>. Opdateringer til 9.5-grenen vil blive dannet indtil februar 2021, 9.6 &#8212; indtil november 2021, 10 &#8212; indtil november 2022, 11 &#8212; indtil november 2023, 12 &#8212; indtil november 2024. <\/p>\n<p>I de nye versioner er 75 fejl rettet og en s\u00e5rbarhed er elimineret<br \/>\n(CVE-2020-1720), for\u00e5rsaget af manglende autorisationskontrol ved udf\u00f8relse af kommandoen &#171;ALTER &#8230; DEPENDS ON EXTENSION&#187;. Under visse omst\u00e6ndigheder giver s\u00e5rbarheden en ikke-privilegeret bruger mulighed for at slette enhver funktion, procedure, materialiseret visning, indeks eller trigger. Angrebet er muligt, hvis administratoren har installeret en hvilken som helst udvidelse, og brugeren kan udf\u00f8re kommandoen CREATE, eller ejerens udvidelse kan overbevises til at udf\u00f8re kommandoen DROP EXTENSION.<\/p>\n<p>Derudover kan n\u00e6vnes fremkomsten af en ny applikation <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/kingluo\/pgcat\">pgcat<\/a><\/noindex>, der g\u00f8r det muligt at replikere data mellem flere PostgreSQL-servere. Programmet underst\u00f8tter logisk replikation via transmission og afspilning p\u00e5 en anden v\u00e6rt af SQL-kommandoer, der udf\u00f8res p\u00e5 hovedserveren, og som medf\u00f8rer \u00e6ndringer i dataene. Koden er skrevet i Go og <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/kingluo\/pgcat\">distribueres<\/a><\/noindex> under Apache 2.0-licensen. De v\u00e6sentligste forskelle fra den indbyggede mekanisme for logisk replikation:<\/p>\n<ul>\n<li class=\"l\"> Underst\u00f8ttelse af alle typer m\u00e5ltabeller (visninger, fdw (Foreign Data Wrapper), segmenterede tabeller, distribuerede tabeller citus);\n<li class=\"l\"> Mulighed for at omd\u00f8be tabeller (replikation fra en tabel til en anden);\n<li class=\"l\"> Underst\u00f8ttelse af tovejsreplikation ved kun at overf\u00f8re lokale \u00e6ndringer og ignorere replikationer, der kommer udefra;\n<li class=\"l\"> Eksistensen af et konfliktl\u00f8sningssystem baseret p\u00e5 LWW-algoritmen (last-writer-win);\n<li class=\"l\"> Mulighed for at gemme oplysninger om replikationsforl\u00f8b og ikke-appliquerede replikater i en separat tabel, som kan bruges til genopretning efter genoptagelse af driften af en midlertidigt utilg\u00e6ngelig modtagende node.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Kilde: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52370\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u0432\u0441\u0435\u0445 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0432\u0435\u0442\u043e\u043a PostgreSQL: 12.2, 11.7, 10.12, 9.6.17, 9.5.21 \u0438 9.4.26. \u0412\u044b\u043f\u0443\u0441\u043a 9.4.26 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0444\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u043c &#8212; \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043a\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0432\u0435\u0442\u043a\u0438 9.4 \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0435\u043d\u0430. \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u0432\u0435\u0442\u043a\u0438 9.5 \u0431\u0443\u0434\u0443\u0442 \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043e \u0444\u0435\u0432\u0440\u0430\u043b\u044f 2021 \u0433., 9.6 &#8212; \u0434\u043e \u043d\u043e\u044f\u0431\u0440\u044f 2021 \u0433\u043e\u0434\u0430, 10 &#8212; \u0434\u043e \u043d\u043e\u044f\u0431\u0440\u044f 2022 \u0433\u043e\u0434\u0430, 11 &#8212; \u0434\u043e \u043d\u043e\u044f\u0431\u0440\u044f 2023 \u0433\u043e\u0434\u0430, 12 [&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-42942","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=\"\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u0432\u0441\u0435\u0445 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0432\u0435\u0442\u043e\u043a PostgreSQL:\" \/>\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\/da\/blog\/obnovlenie-postgresql-s-ustraneniem-uyazvimosti-vypusk-sistemy-replikaczii-pgcat\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"da_DK\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 PostgreSQL \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438. \u0412\u044b\u043f\u0443\u0441\u043a \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0440\u0435\u043f\u043b\u0438\u043a\u0430\u0446\u0438\u0438 pgcat | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u0432\u0441\u0435\u0445 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0432\u0435\u0442\u043e\u043a PostgreSQL:\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/da\/blog\/obnovlenie-postgresql-s-ustraneniem-uyazvimosti-vypusk-sistemy-replikaczii-pgcat\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2020-02-17T11:41:56+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2020-02-17T11:41:56+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Opdatering af PostgreSQL med eliminering af s\u00e5rbarhed. 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