{"id":37361,"date":"2019-10-31T22:17:12","date_gmt":"2019-10-31T19:17:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/udalyonnaya-dos-uyazvimost-v-ipv6-steke-freebsd\/"},"modified":"2019-10-31T22:17:12","modified_gmt":"2019-10-31T19:17:12","slug":"udalyonnaya-dos-uyazvimost-v-ipv6-steke-freebsd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/udalyonnaya-dos-uyazvimost-v-ipv6-steke-freebsd","title":{"rendered":"Vulnerabiliteti i larg\u00ebt DoS n\u00eb stek-in IPv6 FreeBSD","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>N\u00eb FreeBSD <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2019-August\/001908.html\">\u00ebsht\u00eb eliminuar<\/a><\/noindex> vulnerabiliteti (CVE-2019-5611), q\u00eb lejon t\u00eb sjell\u00eb crashing t\u00eb b\u00ebrtham\u00ebs (packet-of-death) p\u00ebrmes d\u00ebrgimit t\u00eb paketeve ICMPv6 MLD t\u00eb fragmentuara n\u00eb m\u00ebnyr\u00eb speciale (<noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/rfc2710\">Multicast Listener Discovery<\/a><\/noindex>). Problemi <noindex><a rel=\"nofollow\" href=\"https:\/\/www.reddit.com\/r\/BSD\/comments\/c4krwr\/freebsd_ipv6_remote_dingdong_attack_kernel_panic\/\">\u00ebsht\u00eb shkaktuar nga<\/a><\/noindex> \u00ebsht\u00eb mungesa e kontrollit t\u00eb nevojsh\u00ebm n\u00eb thirrjen m_pulldown(), e cila mund t\u00eb \u00e7oj\u00eb n\u00eb kthimin e zezave t\u00eb mbufs, n\u00eb shkelje t\u00eb pritshm\u00ebrive nga ana thirr\u00ebse.<\/p>\n<p>Vulnerabiliteti <noindex><a rel=\"nofollow\" href=\"https:\/\/svnweb.freebsd.org\/base?view=revision&#038;revision=350815\">\u00ebsht\u00eb eliminuar<\/a><\/noindex> n\u00eb p\u00ebrdit\u00ebsimet 12.0-RELEASE-p10, 11.3-RELEASE-p3 dhe 11.2-RELEASE-p14. Si nj\u00eb zgjidhje mbrojt\u00ebse, mund t\u00eb \u00e7aktivizoni mb\u00ebshtetje p\u00ebr fragmentimin p\u00ebr IPv6 ose t\u00eb filtroni n\u00eb firewall opsionet n\u00eb titullin <noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/draft-ietf-6man-hbh-header-handling-03\">HBH<\/a><\/noindex> (Hop-by-Hop). \u00cbsht\u00eb interesante q\u00eb gabimi q\u00eb \u00e7on n\u00eb vulnerabilitet u identifikua q\u00eb n\u00eb vitin 2006 dhe u eliminua n\u00eb OpenBSD, NetBSD dhe macOS, por mbeti i pap\u00ebrmir\u00ebsuar n\u00eb FreeBSD, megjith\u00ebse zhvilluesit e FreeBSD ishin njoftuar p\u00ebr problemin.<\/p>\n<p>Gjithashtu mund t\u00eb theksohet eliminimi n\u00eb FreeBSD t\u00eb dy vulnerabiliteteve t\u00eb tjera:<\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2019-August\/001910.html\">CVE-2019-5603<\/a><\/noindex> \u2014 mbushja e numrit t\u00eb referencave n\u00eb strukturat e t\u00eb dh\u00ebnave mqueuefs gjat\u00eb p\u00ebrdorimit t\u00eb bibliotekave 32-bit n\u00eb nj\u00eb mjedis 64-bit (kompatibiliteti 32-bit). Problemi shfaqet kur mqueuefs \u00ebsht\u00eb aktivizuar, e cila nuk \u00ebsht\u00eb aktive si parazgjedhje, dhe mund t\u00eb \u00e7oj\u00eb n\u00eb akses n\u00eb skedar\u00eb, katalog\u00eb dhe socket-e t\u00eb hapura nga procese q\u00eb i p\u00ebrkasin p\u00ebrdoruesve t\u00eb tjer\u00eb, ose p\u00ebr t\u00eb organizuar akses n\u00eb skedar\u00eb t\u00eb jasht\u00ebm nga nj\u00eb mjedis jail. N\u00ebse p\u00ebrdoruesi ka akses root n\u00eb jail, vulnerabiliteti lejon marrjen e aksesit root n\u00eb mjedisin host.\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2019-August\/001909.html\">CVE-2019-5612<\/a><\/noindex> \u2014 problemi gjat\u00eb aksesit multithread n\u00eb pajisjen \/dev\/midistat kur ndodh nj\u00eb gjendje garash mund t\u00eb \u00e7oj\u00eb n\u00eb leximin e zonave t\u00eb memories s\u00eb b\u00ebrtham\u00ebs jasht\u00eb kufijve t\u00eb tamponit t\u00eb dedikuar p\u00ebr midistat. N\u00eb sistemet 32-bit, p\u00ebrpjekja p\u00ebr t\u00eb shfryt\u00ebzuar vulnerabilitetin \u00e7on n\u00eb rr\u00ebzimin e b\u00ebrtham\u00ebs, nd\u00ebrsa n\u00eb sistemet 64-bit lejon t\u00eb kuptohet p\u00ebrmbajtja e zonave t\u00eb rastit t\u00eb memories s\u00eb b\u00ebrtham\u00ebs.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Burimi: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51332\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2019-5611), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043a\u0440\u0430\u0445 \u044f\u0434\u0440\u0430 (packet-of-death) \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 ICMPv6 MLD (Multicast Listener Discovery). \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435\u043c \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0432 \u0432\u044b\u0437\u043e\u0432\u0435 m_pulldown(), \u0447\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0432\u043e\u0437\u0432\u0440\u0430\u0442\u0443 \u043d\u0435 \u043d\u0435\u043f\u0440\u0435\u0440\u044b\u0432\u043d\u044b\u0445 \u0446\u0435\u043f\u043e\u0447\u0435\u043a mbufs, \u0432\u043e\u043f\u0440\u0435\u043a\u0438 \u043e\u0436\u0438\u0434\u0430\u043d\u0438\u044f \u0432\u044b\u0437\u044b\u0432\u0430\u044e\u0449\u0435\u0439 \u0441\u0442\u043e\u0440\u043e\u043d\u044b. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 12.0-RELEASE-p10, 11.3-RELEASE-p3 \u0438 11.2-RELEASE-p14. \u0412 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043e\u0431\u0445\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0443\u0442\u0438 \u0437\u0430\u0449\u0438\u0442\u044b \u043c\u043e\u0436\u043d\u043e [&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-37361","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2019-5611), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043a\u0440\u0430\u0445 \u044f\u0434\u0440\u0430.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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