{"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\/da\/blog\/news\/vo-freebsd-ustraneny-udalyonno-ekspluatiruemye-uyazvimosti-v-ipfw","title":{"rendered":"I FreeBSD er der blevet rettet fjernt udnyttelige s\u00e5rbarheder i ipfw","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Ipfw-pakkefilter <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-April\/001945.html\">er blevet rettet<\/a><\/noindex> Der er to s\u00e5rbarheder i koden til parsing af TCP-muligheder, for\u00e5rsaget af forkert datavalidering i de behandlede netv\u00e6rkspakker. Den f\u00f8rste s\u00e5rbarhed (CVE-2019-5614) kan, n\u00e5r den behandler bestemte formaterede TCP-pakker, f\u00f8re til adgang til hukommelse uden for den tildelte mbuf-buffer, og den anden (CVE-2019-15874) kan f\u00f8re til adgang til allerede frigivne hukommelsesomr\u00e5der (use-after-free). <\/p>\n<p>Der er ikke udf\u00f8rt en vurdering af s\u00e5rbarhedernes egnethed til udnyttelse, der kan initiere udf\u00f8relse af ondsindet kode, men det kan ikke udelukkes, at s\u00e5rbarhederne kan f\u00f8re til mere end blot en kernelcrash. Problemerne er blevet l\u00f8st i opdateringerne FreeBSD 11.3-RELEASE-p8 og 12.1-RELEASE-p4 (rettelserne blev indf\u00f8rt i stable-grenene allerede i december sidste \u00e5r, men det blev f\u00f8rst nu klart, at disse rettelser er relateret til udbedring af s\u00e5rbarheden).<\/p>\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=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 5.0.3 - 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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\u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u043c\u044b\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 ipfw | ProHoster\" \/>\n\t\t<meta property=\"og: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\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/da\/blog\/news\/vo-freebsd-ustraneny-udalyonno-ekspluatiruemye-uyazvimosti-v-ipfw\" \/>\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\" 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