{"id":78908,"date":"2020-04-23T01:41:59","date_gmt":"2020-04-22T23:41:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vo-freebsd-ustraneny-udalyonno-ekspluatiruemye-uyazvimosti-v-ipfw"},"modified":"2020-04-23T01:41:59","modified_gmt":"2020-04-22T23:41:59","slug":"vo-freebsd-ustraneny-udalyonno-ekspluatiruemye-uyazvimosti-v-ipfw","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/vo-freebsd-ustraneny-udalyonno-ekspluatiruemye-uyazvimosti-v-ipfw","title":{"rendered":"W FreeBSD usuni\u0119to zdalnie wykorzystane luki w zabezpieczeniach w ipfw","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>W filtrze pakiet\u00f3w ipfw <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-April\/001945.html\">zosta\u0142y usuni\u0119te<\/a><\/noindex> istniej\u0105 dwie podatno\u015bci w kodzie analizy opcji TCP, spowodowane nieprawid\u0142ow\u0105 weryfikacj\u0105 danych w przetwarzanych pakietach sieciowych. Pierwsza podatno\u015b\u0107 (CVE-2019-5614) podczas przetwarzania specjalnie sformatowanych pakiet\u00f3w TCP mo\u017ce prowadzi\u0107 do dost\u0119pu do pami\u0119ci poza przydzielonym buforem mbuf, a druga (CVE-2019-15874) do dost\u0119pu do ju\u017c zwolnionych obszar\u00f3w pami\u0119ci (use-after-free). <\/p>\n<p>Nie przeprowadzono analizy podatno\u015bci ujawnionych problem\u00f3w do exploatacji, zdolnej do inicjowania wykonania kodu przez napastnika, ale nie mo\u017cna wykluczy\u0107, \u017ce podatno\u015bci mog\u0105 nie ogranicza\u0107 si\u0119 do wywo\u0142ania awarii j\u0105dra. Problemy zosta\u0142y naprawione w aktualizacjach FreeBSD 11.3-RELEASE-p8 i 12.1-RELEASE-p4 (poprawki w ga\u0142\u0119zi stable zosta\u0142y wprowadzone ju\u017c w grudniu ubieg\u0142ego roku, ale informacja, \u017ce te poprawki s\u0105 zwi\u0105zane z usuni\u0119ciem podatno\u015bci, sta\u0142a si\u0119 znana dopiero teraz).<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>\u0179r\u00f3d\u0142o: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52783\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0430\u043a\u0435\u0442\u043d\u043e\u043c \u0444\u0438\u043b\u044c\u0442\u0440\u0435 ipfw \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u043a\u043e\u0434\u0435 \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u043e\u043f\u0446\u0438\u0439 TCP, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u044b\u0435 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c\u044b\u0445 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0430\u043a\u0435\u0442\u0430\u0445. \u041f\u0435\u0440\u0432\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2019-5614) \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 TCP-\u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0434\u043e\u0441\u0442\u0443\u043f\u0443 \u043a \u043f\u0430\u043c\u044f\u0442\u0438 \u0432\u043d\u0435 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u0443\u0444\u0435\u0440\u0430 mbuf, \u0430 \u0432\u0442\u043e\u0440\u0430\u044f (CVE-2019-15874) \u043a \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044e \u043a \u0443\u0436\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0451\u043d\u043d\u044b\u043c \u043e\u0431\u043b\u0430\u0441\u0442\u044f\u043c \u043f\u0430\u043c\u044f\u0442\u0438 (use-after-free). \u0410\u043d\u0430\u043b\u0438\u0437 \u043f\u0440\u0438\u0433\u043e\u0434\u043d\u043e\u0441\u0442\u0438 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0434\u043b\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-78908","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043f\u0430\u043a\u0435\u0442\u043d\u043e\u043c \u0444\u0438\u043b\u044c\u0442\u0440\u0435 ipfw \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u043a\u043e\u0434\u0435 \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u043e\u043f\u0446\u0438\u0439 TCP, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u044b\u0435.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta 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